Question

7.5×2.3-0.5×2.5 22.5×0.4简便运算？

Answer 1

关于7.5×2.3-0.5×2.5 22.5×0.4的简便运算，详细的解答步骤及结果如下：
7.5×2.3-0.5×2.5+22.5×0.4
=（7.5-0.5）×（2.5-2.3）×0.4
=7×0.2×0.4
=1.4×0.4
=0.56

Answer 2

此题用乘法分配律进行计算即可。
乘法分配律是指两个数的和与一个数相乘，可以先把它们分别与这个数相乘，再相加。（a+b）×c=a×c+b×c 】（字母表示）
7.5x2.3-0.5x2.5+22.5x0.4
=2.5x3x2.3-2.5x0.5+2.5x9x0.4
=2.5x（6.9-0.5+3.6）
=2.5x10
=25

Answer 3

7.5x2.3-0.5x2.5
=2.5x3x2.3-.05x2.5
=2.5x6.9-0.5x2.5
=2.5x(6.9-0.5）
=2.5x6.4
=16
22.5x0.4=22x0.4+0.5x0.4=8.8+0.2=9

Answer 4

7.5×2.3-0.5×2.5+22.5×0.4
=(2.5×3)×2.3-2.5×0.5+(2.5×9)×0.4
=2.5×(3×2.3)-2.5×0.5+2.5×(9×0.4)
=2.5×6.9-2.5×0.5+2.5×3.6
=2.5×(6.9-0.5+3.6)
=2.5×10
=25

Answer 5

7.5x2.3-0.5x2.5+22.5x0.4
=2.5x3x2.3-2.5x0.5+2.5x9x0.4
=2.5x（6.9-0.5+3.6）
=2.5x10
=25
希望采纳，谢谢