问题
计算题
脱式计算,能简算的要简算。
|
答案
(1)原式=200-108+189
=281
=62
=1120
(4)原式=298+102+85
=485
=336
=9000
(7)原式=45×18÷90
=810÷90
=9
=13700
=2300+46
=2346
脱式计算,能简算的要简算。
|
(1)原式=200-108+189
=281
=62
=1120
(4)原式=298+102+85
=485
=336
=9000
(7)原式=45×18÷90
=810÷90
=9
=13700
=2300+46
=2346