遞等式計算,能簡算的要簡算4 8 0 25 2 33 0 5 4 1

2021-04-30 04:17:09 字數 1936 閱讀 9477

1樓:德弘秋梵

(1)4.8×0.25,

=1.2×4×0.25,

=1.2×(4×0.25),

=1.2×1,

=1.2;

(2)2.33×0.5×4,

=2.33×(0.5×4),

=2.33×2,

=4.66;

(3)1.2×2.5+0.8×2.5,

=(1.2+0.8)×2.5,

=2×2.5,

=5;(4)50.4×1.9-1.9,

=(50.4-1)×1.9,

=49.4×1.9,

=93.86;

(5)3.7×0.25+4,

=0.925+4,

=4.925;

(6)0.65×201,

=0.65×(200+1),

=0.65×200+0.65×1,

=130+0.65,

=130.65.

用遞等式計算。(能簡便計算的用簡便方法計算) 2.5×(3.8×0.4)

2樓:凌月霜丶

2.5×(3.8×0.4) 4.6×0.33+5.4×0.33

= 3.8*(2.5*0.4) =0.33*(4.6+5.4)

=3.8*1 =0.33*10

=3.8 =3.3

0.25×39+0.25 8.36-2.48-3.52

= 0.25*(39+1) =8.36-(2.48+3.52)

= 0.25*40 =8.36-6

=10 =2.36

3樓:

2.5×(3.8×0.4)

= 2.5x0.4x3.8

=1x3.8

= 3.8

4.6×0.33+5.4×0.33

=(4.6+5.4)x0.33

=10x0.33

=3.3;

0.25×39+0.25

=0.25x(39+1)

=0.25x40

=10;

8.36-2.48-3.52

=8.36-(2.48+3.52)

=8.36-6

=2.36.

供參考。

5.2×4+4.8÷0.25怎麼簡便計算

4樓:妙酒

5.2×4+4.8÷0.25

=5.2x4+4.8x4

=(5.2+4.8)x4

=10x4

=40,

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遞等式計算.(能用簡便演算法的用簡便方法計算) 1.5×105; 2.33×0.5×4 2.05÷0.82+33.6

5樓:康千厹

(1)1.5×105

=1.5×(100+5),

=1.5×100+1.5×5,

=150+7.5,

=157.5;

(2)2.33×0.5×4

=2.33×(0.5×4),

=2.33×2,

=4.66;

(3)2.05÷0.82+33.6

=2.5+33.6,

=36.1;

(4)9.07-22.78÷3.4

=9.07-6.7,

=2.37.

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