问题
计算题
用简便方法计算。 | ||||
|
答案
(1)88×0.25×4
=88×1
=88
=2.8×(7.2+2.8)
=28
(3)10.1×55
=550+5.5
=555.5
=25.74-5
=20.74
单项选择题
用简便方法计算。 | ||||
|
(1)88×0.25×4
=88×1
=88
=2.8×(7.2+2.8)
=28
(3)10.1×55
=550+5.5
=555.5
=25.74-5
=20.74