计算下面各题,注意运用简便方法.
1.7﹣36÷30 1÷〔(1.1﹣0.7)×0.2〕 7.3×7.3+2.7×7.3 4.78﹣0.96﹣0.04 930÷5÷0.6.
递等式计算,能简算的要简算.
7.3×101﹣7.3 4.59÷4.5÷0.2 1.5×2.7﹣2.6
8.8×1.25 (3.74﹣2.7)×8÷0.4.
计算下面各题,能简算的要简算
0.87×4.5﹣4.5×0.67 3.18﹣(0.33+1.18)
1.2+1.47÷0.7 1.76﹣[(0.74+0.26)÷0.8].
脱式计算,能简算得要简算.
5.45+0.56×7.4 2.5×0.89×4 25×16.7﹣25×0.7
7.6×99 5.6×10.2 2.5×3.2×1.25
9.6÷0.4×0.25 3.56×2.8﹣1.24×0.9 (12.5+1.25)×8
(2.5×1.7)×4 12.5×8.8 0.89×100.1
0.25×0.8×4×0.125 8.4×0.26+0.74 31.7﹣0.5×0.7﹣1.65.
递等式计算(能简算的就简算).
(1)3.37+12.89+2.63
(2)513000÷125÷8
(3)39×26+26×61
(4)31.25﹣6.29﹣4.71
(5)130×(300﹣125÷25)
(6)2748÷[216÷(155﹣83)].
脱式计算(能简算的要简算)
12.03﹣22.78÷3.4 4.78×99+4.78 2.5×6.9×4
28.8÷1.2×0.6 6.8+3.2÷2.5 8.6×3.3+2.7×8.6.
递等式计算:(能简算的要简算)
①0.125×9×8×0.3 ②4.62÷5÷0.66
③5.78×2.3+5.78+5.78×6.7 ④7.75×[20÷(3.24﹣3.04)].
用递等式计算.(能简算的要写出简算过程)
(1)8.5×[(2.36+2.42)÷0.25] (2)3.9÷[(1.3+0.6)×6﹣3.6] (3)4.25×6.3+3.7×4.25
(4)205×0.99 (5)25.6﹣7.49﹣2.51 (6)[2.5﹣(6.8﹣4.9)]×0.8.
口算:
420÷60= 1﹣0.1= 99×9.9×0= 1.09+0.91= 4.35×10=
30×80= 4.2÷21= 2.5×1.9×4= 88+104+96= 67÷10=
计算下列各题,能简算的用简便方法计算.
26﹣3.17﹣7.83 67×38+33×38 125×25×64
29.38﹣(19.38﹣4.76) 329×87﹣87×29 5.8﹣3.62﹣0.38+0.2.
计算下列各题(能简算要简算).
5.18+0.73+0.82 0.75×1.8÷1.5 12.5×7.1×0.8
6.12×99+6.12 8.6÷0.86+8×0.35 5.6×(18.5﹣8.5÷0.5)
试题篮
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