问题
计算题
脱式计算,能简算的要简算。 | ||||
|
答案
(1)70.8-7.25-1.75
=70.8-9
=61.8
=10+20
=30
(3)0.05×0.4×20×1.7
=1×0.4×1.7
=0.68
=4.87×10
=48.7
单项选择题
脱式计算,能简算的要简算。 | ||||
|
(1)70.8-7.25-1.75
=70.8-9
=61.8
=10+20
=30
(3)0.05×0.4×20×1.7
=1×0.4×1.7
=0.68
=4.87×10
=48.7