用简便方法计算
(1)3.79+1.25×8.7×8+6.21;
(2)0.8×(125+12.5+1.25).
用竖式计算.
9.73+0.27= |
6﹣1.55= |
3.05×0.66= |
22.5÷0.25= |
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.
根据46×15=690,1575÷15=105,直接写出下面各题的结果.
4.6×15=
0.46×0.15=
15.75÷0.15=
15.75÷1.5= .
脱式计算
54÷(3.94+6.86)
0.175÷0.25÷4
0.25×32×1.25.
竖式计算.
7.082﹣5.985
4.58×1.05
★40.8÷0.3
8.07×0.32
24.4÷7.4.
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.
简便计算.
①31.7﹣0.5×0.7﹣1.65
②35.72﹣4.9﹣(5.72+5.1)
③111﹣3.67×2.8﹣3.67×7.2
④12.5×6.3+27×1.25+0.125÷0.01.
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].
试题篮
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