用你喜欢的方法计算.
0.25×1.25×0.8×0.4 1.5×[4+15.6÷(2.74﹣1.44)]
2.46×0.8+1.23×0.4 15.4×1.7+9.3×15.4﹣15.4.
你认为怎样算简便就怎样算.
24.6+31.79+25.4 3.21﹣1.O5﹣1.7 (0.5+0.25)×4
76﹣2.4÷0.08 4÷[1﹣(0.8+0.12)] 2.46×9+9×7.54
998﹣736÷32+25;
0.55×1.4+18.395÷6.5;
3.1.4+9.8×7.5﹣0.75÷2.5;
68÷(0.85×4.7+5.3×0.85);
(2÷0.25+0.25÷2)×1.2;
0.21÷[(17.4+3.6)×0.01]×2.5.
递等式计算,能简算的就简算.
(1)3.7+6.3×0.5
(2)21.6÷3×(20﹣19.8)
(3)2.5×2.9×4×2
(4)16.53﹣3.57﹣6.43
(5)5.28×9.8+0.2×5.28
(6)28﹣2×9.5+2.8
(7)(10﹣9.2)×(2.6﹣2.1)÷5
(8)1.5×[(3.6﹣0.36÷0.6)﹣5].
4.27﹣1.72+0.73﹣2.28
12.83﹣(9.5+2.83)
16+(5.32﹣2.16)
5.6×0.125
9.8×0.99
6.2×0.35+0.35×3.8
1.2×198﹣9.8×12
1÷(1.3×28)
下面各题怎样算简便就怎样算.
72.8÷5.6+24.9 5.8×13.7+5.8×6.3 49×101﹣49
2.5×32×1.25 3.9÷1.5÷2 32.7+0.14×50.
脱式计算,能简算的要简算.
0.389×4×0.25 21.97÷5÷2 30.8×12.6﹣30.8×2.6 4.05÷0.81+2.4.
下面各题,怎样简便就怎样算.
(1)10.75﹣(2.4﹣0.86) (2)9.61﹣4.38+0.35
(3)3.87+4.92+1.13 (4)46.24﹣8.66﹣1.34
(5)21.9﹣9.22﹣0.78+8.1 (6)(745﹣25×16)÷15.
怎样简便就怎样算.
①5.5×17.3+2.7×5.5 ②1.25×(6.2﹣5.9)×80 ③1.5×99
④70.3﹣17.48÷7.6 ⑤3.64÷52×23.3 ⑥4.6×(1﹣0.25)+0.75×5.4.
计算下面各题,能用简便方法的要用简便方法计算.
(1)9.78×2.3+2.3×10.22 (2)1.5×11﹣7.83+3.5
(3)7.25÷(31﹣29.55)×1.3 (4)75.6÷[0.7×(8.5﹣7.6)].
脱式计算
①0.24+1.33﹣0.63 ②2.58﹣(3.5﹣2.4) ③19.92﹣14.4﹣0.92
④54÷(3.94+6.86) ⑤3.6÷0.4﹣1.2×5 ⑥3.4×7.8÷3.9.
试题篮
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