5.6÷3.5 3.65×10.1 (用递等式)

问题描述:

5.6÷3.5 3.65×10.1 (用递等式)

5.6÷3.5
=8×0.7÷(5×0.7)
=8÷5
=1.6
3.65×10.1
=3.65×(10+0.1)
=3.65×10+3.65×0.1
=36.5+0.365
=36.865