混合运算(能简便的一定要简便)
4.58+3.38+6.62 0.25×0.125×4×8
4.2×0.75+0.75×5.8 6.38÷0.25÷4.
怎样简便就怎样计算
28.4×99+28.4 3.6×201 0.94×2.5﹣0.45
4×0.8×12.5×2.5 17.5÷0.25×17+13 12.5×32×2.5.
脱式计算,能简算的要简算.
50.4×1.9﹣1.8 3.76×0.25+25.8 4.8×0.25
1.5×105 1.2×2.5+0.8×2.5 21.36÷0.8﹣12.9.
用递等式计算
(1)12.6﹣0.84×5÷1.4 (2)2.8×0.25+7.2×0.25 (3)7.24×[1÷(3.1﹣3.09)]
(4)0.18×(4.6﹣0.598÷0.46) (5)4.83×0.7+3×0.483 (6)8.625÷[(17.2﹣16.2)÷0.04].
怎样简便就怎样计算
31.2×99+31.2 4.6×101 32.5﹣7.8﹣2.2
4×0.8×12.5×2.5 43.7÷2.5÷0.4.
用递等式计算
(1)6.5×(10﹣3.7)+2.98 (2)[4.75+8.4÷(9.2﹣6.8)]×40
(3)19.8﹣0.6×0.6﹣0.64 (4)12.773﹣[4.5×(0.75﹣0.356)+9.23]
(5)2.48×(7.3﹣5.8)+1.5×7.52 (6)0.125×7.9×16
(7)(6.4+0.88)÷0.8+3.2×1.25 (8)24﹣[5.4+(0.6+1.38÷0.23)].
用你喜欢的方法计算.
①8.75﹣3.9+6.25﹣7.1 ②0.08+0.92×5﹣1.28 ③(7.4﹣1.5×2.8)÷0.16
④79÷125÷8 ⑤3.87×9+3.87 ⑥(15.6﹣8.3)×0.5÷12.
脱式计算.(能简算的要简算)
15﹣8.13﹣1.87
5.14+3.225﹣6.302
3.95+5.36﹣1.95
13.67﹣(5.45+3.67)
巧算
(1)1.33﹣0.76+5.67﹣2.24 (2)0.25×3.75+0.75×3.75
(3)1.25×2.5×8×0.4 (4)1+5+9+13+…+3997+4001.
怎样简便就怎样算.
(1)0.25×(4+0.4)+0.9
(2)0.89×1.25﹣0.09×1.25
(3)104×0.25
(4)40×0.625+0.375×40.
计算下面各题,能简算的要简算.
0.125×3.21×8 7.3×1.2﹣1.8 20÷0.4÷2.5 8.6×2.6+1.4×2.6 4.6×102.
计算能简便的要简便:
(1)2.5×6.73×4
(2)18.6×5.8÷0.6
(3)3.25×0.8+6.75÷1.5
(4)(6.3×1.4+3.7×1.4)×2.5
(5)2.4﹣25.3÷5.5+7.6
(6)3.8÷1.25÷1.25÷8÷8.
试题篮
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