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7.2÷1.6+0.8脱式简便运算

7.2÷1.6+0.8 =4.5+0.8 =5.3

7.2÷1.6+0.8脱式计算 解: 7.2÷1.6+0.8 =4.5+0.8 =5.3

7.2÷1.6+0.8 4.5+0.8 =5.3

7.8×1.6-7.8×0.6 =7.8x(1.6-0.6) =7.8x1 =7.8

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

(1)1.25×2.6×0.8,=1.25×0.8×2.6,=1×2.6,=2.6;(2) 3 8 ×(1.6+2 2 3 ),= 3 8 ×1.6+ 3 8 × 8 3 ,=0.6+1,=1.6;(3)95.6 ÷ 1 18 + 4 2 5 ×18,=95.6×18+ 4 2 5 ×18,=(95.6+4.4)×18,=100×18,=1800.

0.35×1.6+0.35×3.4 6.72-3.28-1.72 0.45+6.37+4.55 5.4+6.9×3-(25-2.5)2×41846-620-380 4.8×46+4.8×54 0.8+0.8×2.5 1.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×20 23.65-(3.07+3.65) (4+0.4×0.25)8×7×1.25 1.65×99+1.65 27.85-(7.85+3.4) 48...

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

1.120-36×4÷18+35 2.(58+37)÷(64-9×5) 3.(6.8-6.8×0.55)÷8.5 4.0.12× 4.8÷0.12×4.8 5.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 6.6-1.6÷4= 5.38+7.85-5.37= 7.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 8.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 ...

3×0.2×0.5=2、用简便方法计算。(8分)99×2.455.6÷1.61.25...375.96÷x=164、用脱式计算。(12分)18.5+4.1×7.2-9.510...

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