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分数脱式计算题带答案

1、(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)×(1/2+1/3+1/4)=? 解法:令1/2+1/3+1/4=a, 1/5=b原式=(1...

7/25×4/9+7/25×5/9 =7/25×(4/9+5/9) =7/25×1 =7/25 60×(1/12+1/15+1/4) =60×1/12+60×1/15+60×1/4 =5+4+15 =24 (5/12-3/8)×72 =5/12×72-3/8×72 =30-27 =3 6/7-5/24÷7/12 =6/7-5/24×12/7 =12/14-5/14 =7/14 =1/2 [3/4×(7/16-1/4)]÷9/13 =3/4×(7/1...

1、8分之7+(8分之3-4分之1)=7/8+3/8-1/4=7/8+1/8+1/4-1/4=1+0=1 2、10分之3+15分之14+5分之4=9/30+28/30+24/30=(9+28+24)/30=61/30 3、2分之1-(2分之1-6分之1)=1/2-1/2+1/6=0+1/6=1/6 分数,“成绩”的意思,如考试分数。分数单位,把单位“1”...

脱式计算题带答案 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15 =13.8-0.15 =13.65 6.5×8+3.5×8-47 =52+28-47 =80-47 (80-9.8)×5分之2-1.32 =70.2X2/5-1.32 =28.08-1.32 =26.76 8×7分之4÷[1÷(3.2-2.95)] =8×4/7÷[1÷0.25] =8×4/7÷4 =8/7 2700×(506-499)÷900 ...

图 仿照这两道题,自己再写几道题吧

五年级下期分数脱式计算题如下: 408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35...

1题:原式=1/3-1/4+1/4-1/5+1/5-···+1/98-1/99 =1/3-1/99 =32/99 2题:原式=1.2*30*1.09+1.2×67.3 =1.2×(67.3+32.7) =1.2*100 =120 3题:原式=1.8*40*2.09-1.8*73.6 =1.8*(83.6-73.6) =1.8*10 =18 4题:原式=4*1.7*8*2.1*19.3*8*4*0.1 =4*8*...

五年级下期分数脱式计算题如下: 408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35...

五年级下册分数脱式计算题及答案 读书破万卷,下笔如有神 答案通过自己思考出来的,在网上是问不到答案的哈 多想想,答案错了没关系的 学习的目的就是要学会思考 才是自己的答案,多思考吧.

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