脱式计算,能简算的要简算
9.81×0.1+0.5×98.1+0.049×9812
÷[(2
﹣1.2)×
+0.05]
100﹣32×0.125×0.25 [1﹣(
﹣
)]×
.
用简便方法计算(写出简算过程)
①(
+
+
)×12②18.93﹣6
﹣3
③163×
﹣0.75×62﹣75%④7
÷
+1
×2
.
直接写出得数
0.9+99×0.9
×2÷
×236×25%1.25×3.2×8
+0.75
(
+
)×
4.1×10.1 390×2%×
10÷10%
+0.6+30%
计算,能简算的要简算.
95.6×1.8+0.18×4454.2﹣
+4.8﹣
(
+
)×13×29
×
+
×
﹣
.
直接写出得数:
24.06+0.4=
=(
)×30=
×25=
=
÷6=
=12.5×32×2.5=5﹣
=2.8×25+12×2.5=