用遞等式計算怎麼算簡便就怎樣算

2021-03-19 18:24:04 字數 1862 閱讀 5096

1樓:匿名使用者

0.02+1.5x6.5÷2.5

=0.02+3x0.5x5x1.3÷2.5=0.02+3.9

=3.92

6.5÷2.5簡便演算法(脫式計算)

2樓:瀛洲煙雨

6.5÷2.5

=(6.5×4)×(2.5×4)

=26÷10

=2.6

簡便計算 3.5x1.5+6.5÷2.5

3樓:雲山霧海

簡便計算 3.5x1.5+6.5÷2.5

3.5x1.5+6.5÷2.5

=5.25+2.6

=7.85

直接計算

(9-0.6)÷(2.5+1.5×3)簡便計算

4樓:皮皮鬼

(9-0.6)÷(2.5+1.5×3)

=8.4÷(2.5+4.5)

=8.4÷7

=1.2

5樓:激情

(9-0.6)/(2.5+1.5x3)

=8.4/(2.5+4.5)

=8.4/7

=1.2

用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2

6樓:ta剋

(1)(2.5×6+2.5×4)÷5,

=2.5×(6+4)÷5,

=2.5×10÷5,

=25÷5,

=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,

=30;

(3)0.25×3.2×12.5,

=0.25×4×0.8×12.5,

=(0.25×4)×(0.8×12.5),=1×10,

=10;

(4)7.5÷(1.5+2.5),

=7.5÷4,

=1.875;

(5)0.6×(5+0.6)-1,

=0.6×5+0.6×0.6-1,

=3+0.36-1,

=3.36-1,

=2.36;

(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),

=3.7×1,

=3.7.

用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2×12.

7樓:最強黑客

(1)(2.5×6+2.5×4)÷5,

=2.5×(6+4)÷5,

=2.5×10÷5,

=25÷5,

=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,

=30;

(3)0.25×3.2×12.5,

=0.25×4×0.8×12.5,

=(0.25×4)×(0.8×12.5),=1×10,

=10;

(4)7.5÷(1.5+2.5),

=7.5÷4,

=1.875;

(5)0.6×(5+0.6)-1,

=0.6×5+0.6×0.6-1,

=3+0.36-1,

=3.36-1,

=2.36;

(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),

=3.7×1,

=3.7.

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