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脱式计算能简便的要简便2.6×5点3+4.7×2.6.

4、7x6/5+5、3÷(5/6) =4、7x6/5+5、3x6/5 =(4、7+5、3)x6/5 =10x6/5 =12

8.5×4.7+5.3×8.5 =8.5x(4.7+5.3) =8.5x10 =85

4.71×3.2+4.71×7.8-4.71 =4.71x(3.2+7.8-1) =4.71x10 =47.1

(1)33.5-5.3-4.7+16.5,=(33.5+16.5)-(5.3+4.7),=50-10,=40;(2)9900÷25÷4,=9900÷(25×4),=9900÷100,=99;(3)1÷( 3 5 + 3 10 ),=1÷ 9 10 ,= 10 9 ;(4)24×( 2 3 + 1 6 - 3 8 ),=24× 2 3 +24× 1 6 -24× 3 8 ,=16+4-9...

(1)45×(67+43)=45×110=4950;(2)3.68÷4.6+6.32=0.8+6.32=7.12;(3)72÷59×514=72×95×514=94;(4)1.8×(4.7-3.87÷0.9)=1.8×(4.7-4.3)=1.8×0.4=0.72;(5)15+(14-310×23)=15+(14-15)=15-15+14=14;(6)36÷[(56-13)×3]=36÷[12×...

4.7+4.8+4.9+5.0+5.1+5.2+5.3 =(4.7+5.3)+(4.8+5.2)+(4.9+5.1)+5.0 =10+10+10+5 =35

①(35+13)÷75+14,=1415÷75+14,=23+14,=1112;②29+5.28+79+4.72,=(29+79)+(5.28+4.72),=1+10,=11;③85.7×16+14.3×16,=(85.7+14.3)×16,=100×16,=1600;④2+48%÷0.6-34,=2+0.8-34,=2.8-0.75,=2.05.

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)5.45+0.56×7.4,=5.45+4.144,=9.594;(2)2.5×0.89×4,=(2.5×4)×0.89,=10×0.89,=8.9;(3)25×16.7-25×0.7,=25×(16.7-0.7),=25×16,=400;(4)7.6×99,=7.6×(100-1),=7.6×100-7.6,=760-7.6,=752.4;(5)5.6×10.2,=5.6×...

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