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7.2÷1.6+0.8脱式简便运算

7.2÷1.6+0.8 =( 7.2÷8) ÷( 1.6÷8)+0.8 =0.9 ÷0.2+0.8 = 4.5+ 0.8 =5.3

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

①0.28*4.3+7.2*0.43 =0.28*4.3+0.72*4.3 =4.3*(0.28+0.72) =4.3*1 =4.3 ②78.5+1.5*18/2.5 =78.5+1.08 =79.58 ③18.4+1.6*0.4*2.4 =18.4+1.536 =19.936 ④(6.8+1.7)*1.2/0.16 =8.5*12/1.6 =8.5*7.5 =63.75

0.35×1.6+0.35×3.4 0.25×8.6×4 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....

7.2/1.6+0.8 =72/16+0.8 =9/2+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

6.8÷0.17x1.6 =40x1.6 =64

(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.

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