脫式計算。(能簡便就簡便),脫式計算,求解,能簡便就簡便

2022-12-19 19:16:30 字數 1877 閱讀 5133

1樓:淺笑_季末

8×1/4+15÷4-21×0.25

=8/4+15/4-21/4

=23/4-21/4

=2/4

=1/2

36÷(5/12-1/4)×1又1/9

=36÷2/12×10/9

=36×10/9×12/2

=40×12/2

=240

11-3又7/11-(1又4/11×8/15+1又4/11×7/15)

=11-40/11-(15/11×8/15+15/11×7/15)=11-40/11-15/11×(8/15+7/15)=11-40/11-15/11×1

=11-(40/11+15/11)

=11-5=6

2樓:為愛守護你的我

8×1/4+15÷4-21×0.25

=2+3又3/4-5.25

=2+3.75-5.25

=0.5

36÷(5/12-1/4)×1又1/9

=36÷1/6x10/9

=216x10/9

=240

11-3又7/11-(1又4/11×8/15+1又4/11×7/15)

=7又4/11-15/11

=6又15/11-15/11=6=

脫式計算,求解,能簡便就簡便

3樓:匿名使用者

5/17×9/24+9/17×7/24

=5/17×9/24+7/17×9/24

=(5/17+7/17)×9/24

=12/17×9/24

=9/34

用脫式計算,能簡便就簡便。 20

4樓:新野旁觀者

11.4+1.25×2.4

=11.4+1.25×2+1.25×0.4=11.4+2.5+0.5

=11.4+3

=14.4

2.3+3.91÷(回22-19.7)

=2.3+3.91÷2.3

=2.3+1.7

=4(455-12.5×4)÷8.1

(455-50)÷8.1

=405÷9÷0.9

=45÷0.9

=500.8×[13-(3.12+5.28)]=0.8×(答13-8.4)

=0.8×4.6

=0.8×(5-0.4)

=0.8×5-0.8×0.4

=4-0.32

=3.68

脫式計算(能簡便就簡便計算)(用漢字和數字回答)

5樓:尹浩然

(1又7分之5×0.875+2.6÷5分之4)÷2又3分之8=(1又七分之五x八分之七+二又五分之三÷五分之四)÷二又八分之三=(二分之三+四分之十三)÷二又八分之二

=2(69分之2+71分之2)×23+25÷71=49.5×十又五分之三-49.5×五分之三=49.5

6樓:玉歌飛

後面好模糊 看不清楚

脫式計算,能簡便的就簡便,快,快,謝謝,求求大家

7樓:兗礦興隆礦

7/20*(1-5/28÷10/7)

=7/20-5/28*7/20*7/10

=7/20-7/(4*40)

=49/160

(2-1/4*1/6)÷1/6

=47/24*6

=47/4

5/9*(5-13/10÷13/20)

=5/9*3

=5/3

(1/3-1/5)÷7/15

=2/15*15/7

=2/7

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