计算下面各题能简算的要简算0 125 72 0 25 3 2

2021-03-17 06:57:43 字数 1614 阅读 8200

1楼:康康羊羊羊

0.125×72=0.125×8×9=1×9=9

计算下面各题,能简算的要简算.0.125×32×2.5 0.8×6.3-0.8×3.8 50.4÷3.2×2.08 204÷(3.4×0

2楼:悸26738胁未

(1)0.125×

32×2.5,

=0.125×8×4×2.5,

=(0.125×8)×内(4×2.5),容=1×10,

=10;

(2)0.8×6.3-0.8×3.8,

=(6.3-3.8)×0.8,

=2.5×0.8,

=2;(3)50.4÷3.2×2.08,

=15.75×2.08,

=32.76;

(4)204÷(3.4×0.5),

=204÷1.7,

=120;

(5)(43.26+2.34)÷7.5,

=45.6÷7.5,

=6.08;

(6)(20-0.8×9)×5.7,

=(20-7.2)×5.7,

=12.8×5.7,

=72.96.

计算下面各题,能简算的要简算

3楼:du知道君

2.5×

32×12.5 =(2.5×4)×(8×12.

5) =10×100 =1000 7/9÷11/5+2/9×5/11 =7/9×5/11+2/9×5/11 =(7/9+2/9)×5/11 =1×5/11 =5/11 3/5÷【(1/5+1/3)÷2/9】专 =3/5÷【8/15÷2/9】 =3/5÷12/5 =1/4 678-192÷8×12 =678-24×12 =678-288 =390 8×(7/8-5/9)×9 =8×7/8×9-8×5/9×9 =63-40 =23 2.解方属程或解比例。 3/4x+x=1.

4 解:1.75x=1.

4 x=1.4÷1.75 x=0.8

计算下面各题,能简算的要简算. 0.125×32×2.5 0.8×6.3-0.8×3.8 50.4÷3.2×2.08 204÷(3.4

4楼:后祖

(1)0.125×32×2.5,

=0.125×8×4×2.5,

=(0.125×8)×(4×2.5),

=1×10,

=10;

(2)0.8×6.3-0.8×3.8,

=(6.3-3.8)×0.8,

=2.5×0.8,

=2;(3)50.4÷3.2×2.08,

=15.75×2.08,

=32.76;

(4)204÷(3.4×0.5),

=204÷1.7,

=120;

(5)(43.26+2.34)÷7.5,

=45.6÷7.5,

=6.08;

(6)(20-0.8×9)×5.7,

=(20-7.2)×5.7,

=12.8×5.7,

=72.96.

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