4.3×1.02简便运算

问题描述:

4.3×1.02简便运算

4.3×1.02
=(4+0.3)×1.02=4.08+0.306=4.386

4.3×1.02
=4.3×(1+0.02)
=4.3×1+4.3×0.02
=4.3+0.086
=4.386.

原式
=4.3×(1+0.02)
=4.3×1+4.3×0.02
=4.3+0.086
=4.386