问题
计算题
用简便方法计算下面各题。
|
答案
(1)198+214+202+386 | |
=(198+202)+(214+386) | |
= 400+600 | |
=1000 | (2)473-65-35 |
= 473-(65+35) | |
= 473-100 | |
=373 | |
(3)88×125 | |
=80×125+8×125 | |
=10000+1000 | |
=11000 | (4)99×58+58 |
=(99+1)×58
=100×58
=5800
(5)8600÷25÷4
=8600÷(25×4)
=86
=15×(83-13)
=1050