Question

0.22×43+78×0.43的简便运算方法？

Answer 1

0.22*43+78*0.43
=0.22*43+0.78*43
=43*（0.22+0.78）
=43*1
=43

Answer 2

0.22×43可以看做22×0.43，结果不变，所以0.22×43+78×0.43=22×0.43+78×0.43=0.43×（22+78）=0.43×100=43

Answer 3

0.22×43+78×0.43的简便运算方法:
=22x0.43+78x0.43
=（22+78）x0.43
=100x0.43
=43

Answer 4

解：原式=0.22x43+78x43÷100
=43x（0.22+78÷100）
=43x（0.22+0.78）
=43x1
=43

Answer 5

0.22＊43+78＊0.43
=43＊（0.22+0.78）
=43＊1
=43