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脱式计算能简便的要简便2.6×5点3+4.7×2.6.

2.6*(5.3+4.7)=26

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.

3.25×4.7-7.8 =15.275-7.8 =7.475 没有简便方法

6.8*4.7+5.3*(10-3.2) =6.8*4.7+5.3*6.8 =6.8*(4.7+5.3) =6.8*10 =68

4.7÷0.25+5.3÷0.25 =4.7×4+5.3×4 =4×(4.7+5.3) =4×10 =40 ~回答完毕~ ~结果仅供参考~ ~\(^o^)/~祝学习进步~~~

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

13.8x19.3+4.7x13.8 =13.8x(19.3+4.7) =13.8x(19.3+0.7+4) =13.8x(20+4) =13.8x20+13.8x4 =276+55.2 =331.2 谢谢,请采纳

(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)2.98+0.8+0.2=2.98+(0.8+0.2)=2.98+1=3.98;(2)2.39+4.7+3.61+2.3=(2.39+3.61)+(2.3+4.7)=6+7=13;(3)9.45-(2.28+3.45)=9.45-2.28-3.45=9.45-3.45-2.28=6-2.28=3.72.

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

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