脱式计算.(1)1.24×9+1.24 (2)2.88÷4.8-0.4

问题描述:

脱式计算.(1)1.24×9+1.24 (2)2.88÷4.8-0.4

(1)1.24×9+1.24
=1.24×(9+1)
=1.24×10
=12.4
(2)2.88÷4.8-0.4
=0.6-0.4
=0.2