新蘇教版六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題答案.doc

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蘇教版六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題答案 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第1頁答案? 1：長方體和正方體都有（6?）個(gè)面、（?12?）條棱、（?8?）個(gè)頂點(diǎn)。長方體相對的面（完全相同），相對的棱（完全相等）；正方體6個(gè)面（?完全相同?），12條棱（?長度相等?）。?? 2：用鐵絲焊接一個(gè)長8厘米、寬5厘米、高4厘米的長方體框架，要準(zhǔn)備8厘米的鐵絲（??4?）根，5厘米的鐵絲（??4??）根，4厘米的鐵絲（??4?）根。至少需用鐵絲（???68?）厘米。?? 3：焊接一個(gè)正方體框架共用去鐵絲60厘米。這個(gè)正方體框架的棱長是（???5?）厘米。?因?yàn)檎襟w有12條相同的棱，所以用60除以12等于5.?? 4：長方體上面下面的面積是（?24?）平方厘米，?長方體前面后面的面積是（?18?）平方厘米，?長方體左右側(cè)面的面積是（?12?）平方厘米。?? 5：下面的長方體都是由棱長1厘米的小正方體擺成的。把它們的長、寬、高分別填在括號里。? 長（7）厘米?寬（3）厘米?高（3）厘米? 一共由（63）個(gè)小正方體擺成? ? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第2頁答案? 1：??? 下面 后面 后面 上面 左面? 左面 右面 下面 2：????√?????????×????????√?????????√? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第3頁答案? 3：????5??????4??????6?? 4：???上面 左面 右面 后面 下面 3 1 2 ??5：? ?后面 上面 左面? ?4????????2?????????3 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第4頁答案? 1：? ? ⑴? ?5×3=15 ? ?? ?? ?⑵? ? 5×6=30 ? ?? ?? ?⑶? ?6×3=18 ? ?? ?? ?⑷? ? ﹙15+30+18﹚×2 ? ?? ?? ?? ?? ?=63×2 ? ?? ?? ?? ?? ?=126 2：? ? 圖一 ? ?? ?? ? ﹙12×10+12×8+10×8﹚×2 ? ?? ?? ?=﹙120+96+80﹚×2 ? ?? ?? ?=296×2 ? ?? ?? ?=592 ? ?? ?? ???圖二 ? ?? ?? ?6×6×6=216 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第5頁答案? 3：???⑴??前??????????后?????????⑵???面積相等????????50? ??????⑶???50x4+5x5x2=250平方厘米?? 4：????﹙30×20+30×15+20×15﹚×2 ?????????=﹙600+450+300﹚×2 ?????????=1350×2 ?????????=2700?? 5：??5×5×6=150? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第6頁答案? 1：????⑴???3? ????????⑵????48????????????頂面????????????????底面?? 2：????﹙20×14+20×21﹚×2+21×14 =﹙280+420﹚×2+294 ??????=700×2+294 =1400+294??=1694?? 3：????玻璃? 1.2×1.2=1.44??????????? ???? ??硬紙板???1.2×1.2×5=7.2?? 4：???? ?﹙8×3+4×3﹚×2—14 ??????????=﹙24+12﹚×2—14 ??????????=36×2—14 ??????????=72—14 ??????????=58? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第7頁答案? 1：???1元大?? 2：???一樣大。體積與形狀無關(guān)。?? 3：???正方體那個(gè)大?? 4：???最后一個(gè)大??????????第2個(gè)最小? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第8頁答案? 1：???8????????8????????10?? 2：???立方分米??????????立方厘米 立方厘米??????????立方米???????? ??升????????????????毫升? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第9頁答案 1： 4 2 2 2 3 2 3 16 12 27 2：????5?? 3：????300????????252????????375? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第10頁答案? 1：?5 4? 3?? 5x4x3=60?? 5x4x3=60立方厘米?? 2：?4? ?4 ?4?? 4x4x4=64?? 4x4x4=64?立方厘米?? 3： 0.6x0.6x0.9=0.324立方分米?? 10x10x10=1000立方分米? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第11頁答案? 4：??3×1.5×0.5=2.25? 5：???30×30×30=27000? 6：????圖一??????? 底面積?????8×6=48???????????? 體積???????48×4=192? 圖二??????? 底面積?????4×4=16???????????? 體積???????4×4×4=64? 7：??⑴??10×4=40?????????? ⑵??10×4×2=80? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第12頁答案? 1：?⑴???15×4=60???????⑵????25×25=625?? 2：??80×80×2=12800?? 3：??解設(shè)：……???????? 3×1.5×x=3.6????????????????????????? x=0.8?? 4：???5×5×5=125立方分米?????? 23÷5=4……?3??????????? 能切4個(gè)? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第13頁答案? 1：??300??????????104 ?????3000?????????1040 27 5.6? ?2.7???????????0.56?? 2：???0.72?????????810???? 600 4200????? ??????8.25??????????70?? 3：???5.3??????????250? 400?????????0.05?? 4：???2×1.5×2=3.6? ??????3.6÷80=0.045立方米=45立方分米?? 5：??40×40×50=80000立方厘米=80L? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第14頁答案? 1： ??256?????????240?? 148 120??? ??? ??0.4??????????0.016? ??????54????????????27?? 2：?⑴??﹙3×2.5+2.5×4=3×4﹚×2 ???????=29.5×2 ???????=59?? ???⑵??4×3×2.5=30?? 3：??⑴??5×5×5=125??????? ?⑵??5×5×6=150? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第15頁答案? 4：?⑴??（8×7+6×7）×2+8×6 ????????=（56+42）×2+8×6 ????????=98×2+48 ????????=196+48 ??????? =244?? ????⑵????70×50×65=227500立方厘米=227.5L 5：???4×4×4×200=12800立方分米=12.8立方米?? 6：???20×0.2×3×520=6240? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第16頁答案? 1：??104????????432????????576?? 2：??32??????????64??????????384?????????512?? 3：??1.8?????????8?? 4：? ?450????????3200?? 5.67 0.8?????? 740 740??????? ??3.6?????????3.6?? 5：??（12×10+12×8+10×8）×2 ?????=（120+96+80）×2 ?????=296×2 ?????=592?? ???????10×10×6=600?? ????????600－592=8? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第17頁答案? 6：??4×44×=64立方分米=64000毫升?? 7：??9×5×4×0.85=153?? 8：?體積??????7×6×6=252? 表面積????7×6×4+6×6×2=168+72=240?? 9：??1米=100厘米? ??????5×5×100=2500立方厘米 ??????7.8×2500=19500克=19.5千克? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第18頁答案? 1：??⑴??（ab+ac+bc)×2??????????⑵???abc?? 2:??????6a???????????a?的立方?? 3：??0.6×0.6×0.6÷0.08=2.7?? 4：??⑴???50×15=750? ?????⑵??（50×1.4+15×1.4）×2+50×15 ????????=（70+21）×2+750 ????????=182+750 ????????=932? ???⑶??50×15×（1.4－0.2﹚ ??????=50×15×1.2 ??????=900? ? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第19頁答案? 1：???4????????2/9?????????8/9?? 2：???9/7?????5/9?????????3? ??????5/6??????5????????????7/2? 3：???3/4×4=3?? 4：???4/3×60=80?? 5：???1/10×8=4/5? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第20頁答案? 1：?⑴???24×1/3=8???????⑵???24×5/6=20?? 2：?⑴??100×2=200???????⑵???100×2/5=40???????⑶???100×5/4=125? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第21頁答案? 3：???15×2/5=6?? 4：????48×3/8=18???????????48×1/6=8?? 5：????60×2/3=40?? 6：????五年級??????720×1.2=864 ???????四年級??????720×7/9=560? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第22頁答案? 1：??⑴?梨樹????????桃樹? ????????桃樹????????梨樹比桃樹多?? ????????⑵???美術(shù)組??????????合唱組? ??????????????合唱組?????????美術(shù)組比合唱組少?? 2：?⑴????六年級二班?????????六年級一班比六年級二班多? ?⑵????文藝書??????????? 科技書比文藝書少? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第23頁答案? 3：?????36×2/9=8?? 4：????⑴???84x5/7=60???????????⑵??84x2/7=24?? 5:???????40x3/8=15????????????15+40=55? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第24頁答案? 1：??1/4????????2/5?? 2：???1/5???????1/6?????????4/3? ??????1/4???????3/10???????2/5? 3：????9/5???????10/7????????2/3 ???????3???????????2?????????1/9?? 4：???3/50×2=3/25?? 5：???3/50×2/3=1/25? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第25頁答案? 5：????2/5×5/8=1/4?? 6：????3/4×2/3=1/2???????????3/4×1/2=3/8?? 7：?????1/8×2/7=1/28?? 8??????7/8×1/14=1/16? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第26頁答案? 1：????9/40????????1/4 27/10???????2/25?? 2：????表面積??1/6×1/6×6=1/6 ???????體積?? ?1/6×1/6×1/6=1/216?? 3：?????120×5/6×3/4=75?? 4：??????110×9/11×9/10=81? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第27頁答案? 1：???15/8????????????????18/5? ??????1/28????????????????45/16?? 2：????第三堆?80×15/16×7/5=105?? 3：????3/4×5/6×4/5=1/2?? 4：???第一個(gè)月?????330×5/11=150????? ??????第二個(gè)月?????150×5/6=125? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第28頁答案? 1：??5/4?????????11??????????1/6?? 2：??6/5?????????1/5????????? 2/9????????8????????? 1??????????0?? 3：??615×1/3×2/5=82?? 4：??⑴??4/5×1/2=2/5????????⑵??4/5--1/2=3/10 5：??2/5＜2＜7/2?????????2/7＜2＜5/2? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第29頁答案? 1：???7/12???????????8???????15/2?? ??????21/16????????25/2??????10/3?? 2：???1/12????????3??????? ???32/25???????15?? 3：???625???????????750??? ???????24?????????????25?? 4：???4/3????????2/5?????????12/7???????1/5?? 5：???3/4x1/2=3/8?? 6:??????2/5x3x5/6=1? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第30頁答案? 1:????7/25??????????1/6????????3????? ??????1/4???????????8/15???????1/36?? 2:??????????????????????=?? 3:??跑步??126x1/3=42???????????跳高??126x1/6=21?? 4:??????6????4????2????8? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第31頁答案? 5:??????18x1/9=2? 6:???????(1)???32x7/8=28????????????(2)??32x3/16=6?? 7:??????360x9/10x8/9=288? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第32頁答案? 1:??????1/4?????????2/9?? 2:??????1/3?????2/7?????????????????1/6?????3/22?? 3:???2/5??????????3/23???????????3/13???? ?????4/5??????????12/23?????????15/13?? 4:???2/25?????????4/25???????????1/45????? ?????1/18?????????1/12????????????2/63?? 5:???????4/5÷4=1/5????????????4/5×1/4=1/5? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第33頁答案? 1：???8????????????????5?? 2：???3/2????12????????????5/4???????25/2?? 3：???18?????????????33/2?????? ????36?????????????108?? 4：????40÷2/5=40×5/2=100?? 5：????20÷1/4=20×4=80 6：???1÷2/9=9/2? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第34頁答案? 1：???5/12???????12/7????????5/7?????????? 7/10???????2/5??????????7/25?? 2：????1/15????????17/30?????? 20 7/10? 3：??(1)??2????????????10/3??? ??????1/2??????????3/10 ?(2）?4/5??????????5/6???? ??????5/9??????????15/32?? 4：???x＝1/6???????x＝?2/3????????x＝?2? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第35頁答案? 5：???9/10?????????＞????? ?????2/5??????????＜?? 6：????＞??????＜???????＜?? 7：????6/5÷1/10=6/5×10=12?? 8：⑴??1/20÷4/5=1/20×5/4=1/16???????? ⑵???4/5÷1/20=4/5×20=16? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第36頁答案? 1：??⑴???（全書?）?的頁數(shù)×2/3=（看了）的頁數(shù) 2/3x=40??? ???????x=60?? ?⑵????(六年級植樹）的棵數(shù)×5/6=（五年級植樹）的棵樹????????????????? 5/6x=50??????x=60?? 2:?????解設(shè)：???……????? ??????7/8x=280??????? ??????x=320? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第37頁答案? 3：????解設(shè)：……??????? 2/7x=4/5????????? ???x=14/5?? 4:???????解設(shè)：……?? ?????????3/4x=18?????? ???????? x=24????????? 5:???????17/50÷1/4=17/50×4=68/50=34/25?? 6:??????5/6????????7/10??????????20/21? ?六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第38頁答案? 1：???⑴??30×2/5=12?????????⑵???12÷2/5=30?? 2：???⑴??180×5/6=150?????????⑵????150÷5/6=180 3：???鴨???360÷9/7=360×7/9=280?? ??????鵝???280÷7/8=280×8/7=320? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第39頁答案? 1:? ?????????? ???? ? 2：????2/3?????????????1/5???????????10/21?? 3：????4/5÷2/3÷2=4/5×3/2×1/2=3/5?? 4：????10×1/2÷1/5=10×1/2×5=25? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第40頁答案? 1.?(1)2/3?? 2∶3? ?2/3?? (2)2/5 ?2∶5 ?2/5?? 2.??5/3?? ?3/5 ?5∶3 ?5/3? 3∶5 ?3/5?? 3.?(1)40∶1 ?40?????????? 48∶1 ?48? ?(2)40? 48?? 4.???4? 12? 1/3??? 5.?涂色略?7∶2? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第41頁答案? 1.???16:8連8/4??????3:12連1:4??????20:4連5:1??????0.1:10連1:100?? 2.???21? 30????????3? 10?? 3.????3∶5? 6∶5?? ??????4∶7? 1∶2???? ??8∶15 ?5∶1?? 4.?????3∶2??? 5.????5∶10＝1∶2?? 150∶600＝1∶4? 125∶1000＝1∶8? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第42頁答案? 1.?(1)8∶7??7∶8?? (2)8/7?7/8?? 2.?第二個(gè)? 3.?(1)5∶8?? 3∶8?? (2)5∶1?? 1∶6? (3)1∶11? ?1∶10? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第43頁答案? 4.????9?? 25 ?12 ?50 5.????5：16? ???3：10??????10：7?????5：1?????? ? ?5/16???????3/10???????10/7????????5?? 6.?(1)70∶100? ?(2)96∶100?? (3)48∶100?? 7.?直徑：4?cm? 8?cm? 周長：12.56?cm? 25.12?cm? 面積：12.56?cm2? 50.24?cm2?? 直徑比：4∶8＝1∶2?? 周長比：12.56∶25.12＝1∶2? 面積比：12．56∶50.24＝1∶4? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第44頁答案? 1：???9/16??????????7/16?? 2：???⑴??1/5?????????⑵???1/2?????????⑶???3/10?? 3：???5+3=8? ????????水果糖?????64×5/8=40??????????巧克力????64×3/8=24?? 4：???42+36=78? ????????甲???130×42/78=70?????????已???130×36/78=60? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第45頁答案? 5：?3+3+2=8?????????? 40×3/8=15 40×3/8=15?????????? 40×2/8=10?? 6：???1+2+3=6?????? 180×1/6=30???? ? ??180×2/6=60???? ? ?180×3/6=90??????? ??是直角三角形?? 7：????2+5+3=10? ??????玫瑰花??90×2/10=18??? ??????杜鵑花???90×5/10=45???? ??????繡球花???90×3/10=27?? 8：???24÷2=12??? ??????5+3=8???????? 120×5/8=75?????? ???120×3/8=45??? ???75×45=3375? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第46頁答案? 1：???3∶5????????????5∶3???????????3∶8?? 2：???⑴??2+5=7? ??????????白兔???35×5/7=25????? ?????????黑兔???35×2/7=10????????? ?⑵???35÷5×2=14?? 3：????20×（1+50）=20×51?=1020?? 4：???巧克力???60÷5×3=36 ? 60－36=24????????? 奶糖???60÷3×5=100????? ???????100－60=40? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第47頁答案? 1：???5/6?????????12????????1/24??? ??????3/5??????????1/35?????5/3?? 2：???7/4??????????1/36????? ?????30????????????8/3?? 3：???10∶7???????7∶10?? 4：???25∶100????????1/4????????25：125?????1/5?? 5：????2∶1?? 6：????3∶1?? 7：????2/5???????4????????25?? 8：????化簡???32∶5???????1∶20?????????? ????????? ??5∶4?????????6∶1????? ???求比值???32/5??????????1/20???????? ?????????????5/4????????????6? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第48頁答案? 1：??1/20????????49/2????????4/3?? 2：??＞???????????＝????????????＜??? ?????＜???????????＜?????????????＞?? 3：??3/10÷2/5?=3/10×5/2?=3/4 2/5÷3/10?=2/5×10/3?=4/3?? 4：??3/20×2÷6/5?=3/20×2×5/6?=1/4? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第49頁答案? 5：???120÷2/3=120×3/2=180?? 6：???科技小組????40÷2/3=40×3/2=60?? ??????????書法小組????60÷3/5?=60×5/3=100?? 7：????黑兔??????????24×2/3=16?? ???????灰兔??????????24÷2/5?=24× 5/2?=60?? 8：???5+3=8 桃樹??????160×5/8=100?? 梨樹??????160×3/8=60?????????? 蘋果樹????160×2/8=40? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第50頁答案? 1：???⑴??4????????????⑵??3??????6?? 2：????小??72÷（6+3）=72÷9=8??????????? 大???8×3=24?? 3：????⑴??25??????????⑵?5? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第51頁答案? 1：???甲??（705+75+75+45）÷3?=900÷3?=300? ??????乙?????300－75=225??????? ????丙??????225－45=180?? 2：????薯片??（40－4）÷（5+1）=36÷6?=6???????????6+4=10?? 3：????女????（29+3）÷（1+3）=32÷4=8?????????? 男????????8－3=5? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第52頁答案? 1：???502+497+501+503+499+496+504??? ?????=500×7+2－3＋1＋3－1－4＋4?? ?????=3500+2? ?????=3502?? 2：??汽車?? 224÷（3+4）=224÷7=32 ?????火車???32×4=128?? 3：????10 徒弟?360÷（5×2+8）=360÷18??=20?? ???師傅???20×2=40???????????? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第53頁答案? 4：?⑴???大卡車?????（25+5×2）÷（2+5）=35÷7=5?? ??????????小汽車?????5－2=3 ?⑵??小汽車?（25－4）÷（5+2）=21÷7=3?? ?????大汽車???3+2=5?? 5：?????小寧??（30+2）÷2=32÷2=16?? ???????小龍???（30－2）÷2?=28÷2=14?? 6：???????前排??（700+5×20）÷（20+20）=800÷40=20?? ??????????后排??（700－5×20）÷（20+20）=600÷40??=15? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第54頁答案? 1：??3/8?????????12????????1/2??? ?????9/20???????36????????2/3?????? ?????2/5?????????1/6???????1/100? 2：? ?5/12+2/3×3/4 =5/12+1/2 ? =5/12+6/12 =11/12 3÷（5/7－3/14） =3÷（10/14－3/14） =3÷1/2 =6 （28+2/7×7/8）×1/4 =（28+1/4）×1/4 =28×1/4+1/4×1/4 =7又1/16 3：??（3/5+1/3）×15 ?? ?=3/5×15+1/3×15? ?? ?? ? =9+5 ???=14 7/13×4/5+6/13÷5/4 = 7/13×4/5+6/13×4/5 =4/5×（7/13+6/13） =4/5×1 =4/5 ? ?? ???（7/24－3/16）÷1/8? ?? ?? ? ? ?? ???=? ?（7/24－3/16）×8? ? ? ?? ???=7/24×8－3/16×8? ?? ?? ? ? ?? ???=7/3－3/2 ? ?? ???=5/6 9/5－（2/5÷1/2+3/7） =??9/5－（2/5×2+3/7） =9/5－（4/5+3/7） =9/5－4/5－3/7 =4/7 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第55頁答案 4：（1）3/4×1/6=1/8 （2）1/8×400=50 5：???15×4/5÷3=15×4/5×1/3=4?? 6：?3/2×1/2=3/4???????? ???3/4+3/2?=3/4+6/4?=9/4? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第56頁答案? 1：???14?????????2/3????????2/11?? 2：? ? 1/7×6/13+8/13×1/7 ?? ???=1/7×（6/13+8/13）? ?? ?? ? ? ? ? =??1/7×14/13 ?? ? =2/13 1/2÷4/5÷（2/9×3/8） =1/2×5/4×12 =15/2 （5/6－3/4）÷5/12÷9/5 =1/12×12/5×5/9 =1/9 3/7÷[5/7－（3/7+1/5）] =3/7÷[5/7－3/7－1/5] =3/7×35/3 =5 3：? ? 男??45×5/9=25 ? ?? ?? ?女??45－25=20 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第57頁答案? 1：????40×（1－5/8）=40×3/8=15?? 2：?????128×（1－5/8）=128×3/8=48?? 3：????120×（1－1/4）=120×3/4=90?? 4：????30×20×（1－7/15）=30×20×8/15?=320? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第58頁答案? 1：??⑴?12×（1+1/4）=12×5/4=15?? ?????⑵??42×（1－2/7）=42×5/7=30?? 2：????30×（1+2/5）=30×7/5=42? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第59頁答案? 3：???27×（1－1/9）=27×8/9=24? 4：????350×（1+1/10）=350×11/10?=385?? 5：????810×（1－2/9）=810×7/9=630?? 6：???84×（1+3/7）=84×10/7=120? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第60頁答案? 1：???⑴??5/8×1/5=1/8?????????? ⑵???5/8×（1－1/5）=5/8×4/5=1/2?? 2：?????????95×（1－3/5）=95×2/5=38?? 3：??⑴??48×（1+1/6）=48×7/6=56? ?????⑵???48×（1－5/12）=48×7/12?=28? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第61頁答案? 4：????⑴???60×1/3+60×1/4?=20+15?=35 ⑵?????60×1/3－60×1/4=20－15=5?? 5：??????⑴??900×（1－1/12）=900×11/12=825?? ????????⑵??825×（1+1/11）=825×12/11=900? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第62頁答案? 1：??⑴??1/5?????????⑵???3/5?????????⑶???1/20?? 2：????⑴??360×4/9+360×1/6=160+60=220?? ???????⑵??360×4/9－360×1/6=160－60=100?? ??????⑶???360－360×4/9－360×1/6=360－160－60=140? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第63頁答案? 3：?⑴??420×（1+3/7）=420×10/7=600 ?⑵??600÷10×7=420?? 4：??四年級?????????720×2/9=160?? ????五年級????3+4=7?????????（720－160）×?3/7?=560×3/7=240?? ?????六年級?（720－160）×4/7=560×4/7?=320?? 5：????5/8－5/8×1/5－1/4?=5/8－1/8－1/4=1/4? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第64頁答案? 1：⑴??20％??????????????⑵??50％? 2：⑴??45％??????????????⑵??70％? 3：⑴??男生????????總??????? ⑵??去年?????????前年??????? ⑶???成活????????總? 4：??⑴???略????????⑵??略? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第65頁答案? 1：??⑴??79％???????????⑵???21％?? 2：???4??????5 3：???19?????20?? 4：???⑴?五????????三?????????⑵??二?? 5：???⑴??60％?????????⑵??80％??????????????120％? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第66頁答案? 1：??1.75----75％??? 0.12------12％??? 0.012------1.2％??????? 0.07-----7％?????? 1.075------107.5％?? 2：???35％???????????200％?????????820％???? ??????3％?????????????72.5％????????1000％??? ???????150％?????????32％???????????5.6％?? 3：????0.09???????????0.54????????????2.085????? ??????2.5????????????4??????????????????0.2?????? ?????0.005?????????0.156???????????0.0003?? 4：????＜?????????＜??????????＞???? ??????＞??????????＞??????????＝?? 5：???0.2??????0.35???????0.65???????0.9????? ?????20％?? ?35％???????65％???????90％? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第67頁答案? 1：??75％????????87.5％????????40％??? ?????66.7％??????215％ ?71.4％? 2：??3/100????????1/2???????????????1/8??? ??????3/250????????18/5?????????????3/400? 3：???1/4????????????4/25????????????7/9??? ??????0.25??????????0.16????????????0.778 ?25％??????????16％????????????77.8％? 4：???80％???????????375％??????????700％? 5：?百分?jǐn)?shù)?64％? 150％? 66.7％? 0.5％?? 35％? 小數(shù)? 0.64 ? 1.5 ?0.667? 0.005? 0.35? 分?jǐn)?shù)? 16/25? 3/2? 2/3? 1/200? 7/20? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第68頁答案? 1：???⑴??24÷50=48％?????????? ⑵??26÷50=52％? ??????⑶??24÷26≈0.923＝92.3％?? 2：???8÷11≈0.727=72.7％?? 3：???14870÷51100＝29.1％????????1－29.1％=70.9％? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第69頁答案? 1：??⑴??接種????????⑵??總?cè)藬?shù)????????⑶??鹽?????????鹽水?? 2：???90％??????93.3％??????83.3％???????86.7％?? 3：???140÷160=87.5％?? 4：???17÷20=85％? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第70頁答案? 1：???⑴（25－20）÷20=5÷20=25％? ??????⑵??（25－20）÷25=5÷25=20％? 2：?????（90－60）÷60=30÷60=50%? 3：??????（16－14﹚÷16?=2÷16=12.5％? 4：??????66÷55=120％???? ?????????（66+55﹚÷?55＝121÷55=220％? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第71頁答案? 1：??⑴??（40－24）÷24=16÷24≈66.7%????? ⑵???（24+16）÷24=40÷24≈166.7％? 2：??⑴??250÷（250+750）=250÷1000=25％? ???⑵????250÷750≈33.3%?????? ??⑶???(750-250)÷250=200%? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第72頁答案? 1：??860×5%=43?? 2：??2400×20%=480?? 3：??2×（1－20%）=2×80%?=1.6?? 4：???7500×10%+7500?=750+7500?=8250?? 5：????100×0.8×1%?=0.8? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第73頁答案? 1：??6000×3×4.25%=765???? ????6000+441=6765?? 2：??4000×1×3.25%+4000?=130+4000=4130?? 3：??60000×2/3×5×4.75%=9500?? 4：??4000×（1－14%）×1×3.25%=111.8? ?????4000×（1－14%）+111.8=3440+111.8=3551.8? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第74頁答案? 1：????70???????95?????????六??????????八八?? 2：????360×80%=288?????????440×75%=330????????2100×88%=1848?? 4：????306÷360=85% 打八五折?? 5：???56÷85%=70? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第75頁答案? 1：???6.2×5%=0.31?? 2：?10×40%=40000元=4萬元? 40000×1×3.25%=0.13萬元?????? ????4+0.13=4.13萬元? 3：???76.5÷90=85%??????????打八五折?? 4：??5800×90%×90%=4698? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第76頁答案? 1：???x－20%=15????????????x+40%x=0.42?????? ? ??80%x=15?????? 1.4x=0.42????? ??????????x=18.75?????????? ?x=0.3? ?2:??????⑴??總?????????已打的??????????還剩的 ???????解設(shè)：??……? ????????????x－40%x=12???????? ???????????????0.6x=12????????? ??????????????????x=20?? ?⑵???總??????????第一天運(yùn)的????????????第二天運(yùn)的??????????? ?????解設(shè)：???……????? ??????????????x－55%x=18???????? ????????????????0.45x=18???????? ???????????? ???????x=40?? 3:??????60÷(1－75%)?=?60÷25%?=240? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第77頁答案? 4：???⑴??120÷25%=480????????? ⑵???360÷（1－25%）=360÷75%=480?? 5：???⑴??80×（1－45%）=80×55%=44?? ??????⑵???44÷（1－45%）=44÷55%?=80? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第78頁答案? 1：???x－65%x=0.7???????????????x+30%x=39????????? ????? ?0.35x=0.7??????????????????1.3x=39?????????? ???????? x=2???????????????????????x=30?? 2:?????⑴??x+25%x=120??????? ?????? ?1.25x=120?????????? ?????????? ?x=96?? ???????⑵??35÷(1－37.5%)=35÷0.625=56? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第79頁答案? 3:????130÷(1－20%)?=130÷1.3=100? 4：??解設(shè)：…… ?????x－20%x=2.4?????? ????????0.8x=2.4?????? ???????????x=3?? 5:????⑴???0.12÷10%=1.2?? ⑵????解設(shè)：……? ????????x+10%x=1.32???? ??????????1.1x=1.32????? ?????????????x=1.2? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第80頁答案? 1：??⑴???x+3/4x=84??????????? ??????? ?7/4x=84???????? ???????????????x=48?????????? ?????84－48=36?? ⑵???x+62.5％x=65?? ????????1.625x=65??????????? ????????? ???x=40??????? ?????????65－40=25?? 2：????一月份用電x度，二月份用電80%x度。??????? ????? x+80%x=126????? ???????????????1.8x=126???? ??????????????????x=70? ????????????80%x=80%×70=56? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第81頁答案? 3：??解設(shè)：?x－20%x=24??????? ??????????? ??80%x=24? ?x=30????????? ?????????20%x=20%×30=6?? 4:????解設(shè)：?男生x人，女生5/6x人。????????????? ???????x+5/6x=88?????????? ????????11/6x=88????????????????????? ??????x=48????????????????? ???5/6x=48x5/6=40?? 5：???解設(shè)：核桃為x，栗子2/5x????????? ????x－2/5x=3/4???????????????????? ????? ?3/5x=3/4???????????????????? ?????? ??x=5/4?????????????? ????2/5x=2/5×5/4=1/2?? 6：????解設(shè)：……????????????? 1/6x+1/8x=35????????????? ????4/24x=35??????????????????? ???x=120? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第82頁答案? 1：??⑴??七? ???亞 ? ?? ? ⑵? ?亞? ???非 2：??⑴? ?乒乓球? ?? ?? ? ? ?? ⑵? ?排球? ???籃球 3： 分?jǐn)?shù) 7/10 6/5 1/4 3/10 7/20 小數(shù) 0.7 1.2 0.25 0.3 0.35 百分?jǐn)?shù) 70% 120% 25% 30% 35% 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第83頁答案? 4：???1.02＞7/8＞0.857＞85%＞2/3＞66% 5：???62.5%??????25%??????10%??????2.5%?? 6：???93.75%????92%???????95%?????≈91.7%????????? ?朱艷紅???????劉琪琪?? 7：????（13－11.7）÷13=1.3÷13=10%? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第84頁答案? 1：???1－8%x=1.38?????????????????x+120%x=7.7 ????92%x=1.38 ?2.2x=7.7 ???????x=1.5????????????????? ??????x=3.5?? 2:?????800+800×2×3.75%=800+60=860?? 3:?????12.8×(1－90%)=12.8×0.1=1.28??萬元 ???????(12.8－1.28)×(1+10%)=11.52×1.1=12.672??萬元 4:?????27÷60%÷3=15? 六年級上冊數(shù)學(xué)補(bǔ)充習(xí)題第85頁答案? 5：360÷（1－10%）=400?? 6：（23+22）÷30%?=45÷30%?=150?? 7：⑴??桃樹? 240÷（1+3/5）=240÷8/5=150?????? ???????蘋果??????150×3/5=90????????????? ⑵??桃樹???240÷（1－3/5）=240÷2/5??=600?????????????? ??????蘋果? 600-240=360?? 8：母雞???60÷（1－2/5）=60÷3/5?=100?????