递等式计算5·8×1·7-2.3×0.8

问题描述:

递等式计算5·8×1·7-2.3×0.8

5·8×1.7-2.3×0.8
=5×1.7+0.8×1.7-2.3×0.8
=8.5-0.8×(2.3-1.7)
=8.5-0.8×0.6
=8.5-0.48
=8.02