简便运算
(1)231×6.2+23.1×208﹣131×27;
(2)7﹣1.125+(2.25﹣6);
(3)1﹣2+3﹣4+5﹣6+7﹣8+9+97﹣98+99;
(4)1++++…+.
(济南)计算
(1)3.14×67+8.2×31.4﹣90×0.314
(2)12.65÷12.5÷0.8
(3)(32×0.63×0.95)÷(1.6×21×1.9)
(苏州)计算下面各题,能简算的要简算.
①630÷18×24 ②0.7+3.9+4.3+6.1 ③16×+4×
④(7.5﹣7.5×0.6)÷4 ⑤(+÷3)× ⑥.
列竖式计算
3.56+7.5= |
3﹣2.08= |
2.25×48= |
44÷50= |
5.06×1.3= |
0.72÷1.5= |
35.5×180= |
50.4÷0.48= |
40.5÷0.18= |
下面各题怎样简便就怎样计算.
15.64﹣2.53﹣7.47 |
2.5×1.4×4 |
8.3×5.7+5.7×1.7 |
4.7+7.69+5.3+2.31 |
0.2×9.9+0.02 |
38×0.3﹣7.2 |
计算下面各题,能简便的运用简便方法计算.
86.9+9.1÷(2.3﹣1.6) |
3.56﹣0.2+6.44﹣4.8 |
21.4﹣40.5÷7.5 |
8.52﹣(5.52+0.9) |
3.12+3.12×99 |
11÷[(0.4+0.04)×0.5] |
用简便方法计算.
0.25×3.2×1.25; 10.1×4.2; 17.6×84+176×1.6.
用竖式计算,减法题要验算,乘法题得数保留两位小数.
4.6﹣1.96
0.65×0.48
32.32÷16.
试题篮
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