下面各题,怎样算简便就怎样算.
6.8+0.98+0.2
43.5+43.5×99
1.25×7.2
11÷[(0.4+0.04)×0.5].
简算
4.9+0.1﹣4.9+0.1
10.78﹣(2.78+3.693)
99.99×22.22+33.33×33.34
(2.5×2.5+2.5×2.5+2.5×2.5+2.5×2.5)×8.
计算下面各题,能简便计算的要简便计算.
(1)5.27﹣1.98﹣0.02
(2)3.2×5.7+6.8×5.7
(3)8.1÷(0.9×0.3)
(4)〔1.6+19.2÷(22﹣21.7)〕×5.
简便计算
0.49×12.5×0.8; 5.61﹣5.61÷1.5; 0.45×78.2+20.8×0.45+0.45.
计算下面各题,能简算的要简算.
①102×4.5
②8×(20﹣1.25)
③8.3+8.3×99.
计算下面各题(能简算的要简算).
2.16÷(2.84+7.96)×0.8
37×9.99
45.7×3.9+5.43×39
[20.08+(32﹣29.9÷23)]÷2.
用简便方法计算下面各题.
1.8×2.48+1.52×1.8﹣0.5;
8.76+0.4×3.6×2.5+1.24.
能简便的用简便方法计算.
0.88×4.9+5.1×0.88 2.5×8×0.4×0.125 0.65×201
21.36÷0.8﹣12.9 0.25×1.25×3.2 7.28+3.2÷2.5.
脱式计算,能简算的就简便计算.
25×32 |
157+289+43 |
(307﹣208)÷11 |
734﹣267﹣33 |
420÷14÷5 |
875﹣864÷32 |