作文薄每页30行,小杰写了1页又12行,每行25个字.一共写了多少个字?
直接写得数.
12.01×9.98≈ 8×1.25= 100÷4÷25= 1﹣
÷62.5%=
0.5×
= 1﹣
﹣0.75= 3.2+0.5﹣3.2+0.5=(
+
+
)×6=
下面各题怎样简便怎样算.
401﹣
﹣
﹣
[1﹣(
﹣
)]×
.
0.85×102
×18+0.4×32 35÷
×1﹣
÷(1﹣
×
)
直接写得数.
÷18= 125×0.8= 1÷
+
= 36×(
﹣
)= 2
﹣0.76+
=
3.6×
= 50×2.4= 10÷
= 10.01×8.99≈
×
÷
×
=
直接写数对又快!
×
÷
×
=
÷
÷
=
×12.1﹣1=
+
÷
=
1÷0.1﹣1×0.1= 15.4﹣(5.4﹣4.5)= 0.4×0.4= 402﹣139=
用竖式计算并验算.
6848÷856
28.4×0.23