如何简算8.4×0.26+0.74
问题描述:
如何简算8.4×0.26+0.74
答
8.4×0.26+0.74
=8.4×(1-0.74)+0.74
=8.4-8.4×0.74+0.74
=8.4-0.74×(8.4-1)
=8.4-0.74×7.4
=8.4-5.476
=2.924