請脫式計算,能簡算的要簡算4 85 3 62 1 38 5 1516 7 (6 2 9 58 33 25 0 25

2021-04-18 16:53:30 字數 1462 閱讀 3075

1樓:嚼咬

(1)4.85+3.62+1.38+5.15,du=(zhi4.85+5.15)+(3.62+1.38),dao專=10+5,

=15;

(2)[16.7-(6.2+9.5)]×8.3,=[16.7-15.7]×8.3,

=1×8.3,

=8.3;

(3)3.25÷

屬0.25+1.75÷0.25,

=13+7,

=20;

(4)10.52-(3.52-1.7),

=10.52-3.52+1.7,

=7+1.7,

=8.7.

150*50-25*5(脫式計算。)(能簡算的要簡算)

2樓:恆新國儀科技****

運用乘法的結合運算,可以得出以下結論:

150*50-25*5

=25*6*5*10-25*5

=25*5*(6*10-1)

=125*(60-1)

=125*59

=7375

3樓:瀛洲煙雨

=7500-125

=7375

直接算最簡便

2-6/13÷9/29-2/3,用脫式計算,能簡算的要簡算。

4樓:匿名使用者

2-6/13÷9/29-2/3

解:根據約分和通分的運用,

原式=2-6/13÷9/29-2/3

=2-6/13x29/9-2/3

=2-58/39-2/3

=2-1-19/39-26/39

=1-45/39

=-6/39

=-2/13

脫式計算(能簡算的要簡算) 2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9×4.8 [113-(34.15+3

5樓:誒呀

(1)2.5×7.1×4,

=(2.5×4)×7.1,

=10×7.1,

=71;

(2)16.12×99+16.12,

=16.12×(99+1),

=16.12×100,

=1612;

(3)5.2×0.9+0.9×4.8,

=0.9×(5.2+4.8),

=0.9×10,

=9;(4)[113-(34.15+38.25)]÷2,=[113-72.4]÷2,

=40.6÷2,

=20.3;

(5)3.6÷(1.2+0.6)×0.5,=3.6÷1.8×0.5,

=2×0.5,

=1;(6)4.82÷0.25+1.25÷0.25,=4.82×4+1.25×4,

=19.28+5,

=24.28.

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