9.9x3.5的简便运算

3.5x3.5+3.5x97.5-3.5的简便运算3.5x3.5+3.5x97.5-3.5=3.5x（3.5+97.5-1）=3.5x100=350补充说明上面的回答，乘法分配律的逆用，小学生“说提取公因数3.5不就是-1了吗"可能不懂

2分之3X3分之5十3分之5x3分之2的简便运算 

0.25X3.2X1.25的简便运算?=0.25×（4×0.8）×1.25=（0.25×4）×（0.8×1.25）=1×1=1=（0.25×0.4）×（8×1.25

9/2x4/5x3/8简便运算9/2x4/5x3/8=9/2x(4/5x3/8)=9/2x3/5=27/109/2x4/5x3/8=9/2x(4/5x3/8)=9/2x3/10=27/20

7又3/5x3.6+0.36除以1/50-36x26%的简便运算!给好评!7又3/5x3.6+0.36除以1/50-36x26%=76x0.36+0.36x50-0.36x26=0.36x(76+50-26)=0.36x100=36请好评如

6（1）25x3又1/3x0.4x3/10简便运算（2）4/7+1/5-3/7=4/5简便运算(3)6/7x[1/(5/6-1/2)]简便运算（1）25x3又1/3x0.4x3/10简便运算（2）4/7+1/5-3/7=4/5简便运算(3)

8.7*9.9的简便运算原式=8.7×（10-0.1）=87-0.87=86.13

9.9×0.32的简便运算9.9×0.32=（10-1）×0.32=3.2-0.32=2.88肯定对秋风燕燕为您解答有什么不明白可以继续问,随时在线等.9.9*0.32=（10-1）*0.32=3.2-0.32=2.88

9.9×1.01的简便运算9.9×1.01=（10-0.1）×（10-0.1）×0.1=（10×10-0.1×0.1）×0.1=（100-0.01）×0.1=9.9999.9×1.01=(10-0.1)×1.01=10×1.01-0.1×1

8.7*9.9简便运算这道题的简便运算方式是8.7*9.9=8.7(10-0.1)=87-0.87=86.13

分数乘法简便运算24x3/5+3/52/3x4/7x3/10越快越好,保证正确24x3/5+3/5=(24+1)x3/5=25x3/5=152/3x4/7x3/10=(2/3x3/10)x4/7=1/5x4/7=4/35

1.8.84X3/7+11.16/2又1/3+3/7分数的简便运算8.84*3/7+11.16/(2+1/3)+3/7=8.84*3/7+11.16*3/7+3/7=3/7*(8.84+11.16+1)=3/7*21=9

求3.6x42.3x3.75-12.5x0.423x28的简便运算3.6x42.3x3.75-12.5x0.423x28=1.08x42.3x12.5-12.5x42.3x0.28=42.3×12.5×（1.08-0.28）=42.3×12

1/1x3+1/3x5+1/5x7+.+1/49x51求简便运算,=1/2((1-1/3)+(1/3-1/5)+.+(1/49-1/51))=2(1-1/3+1/3-1/5+.-1/51))=1/2(1-1/51)=50/102

简便运算3.75x99+3.750.4x63x2.52x63.29+2x36.710.02x38.7x504.9x1.013.75x99+3.75=3.75×（99+1）=3.75×100=3750.4x63x2.5=0.4×2.5×63=

简便计算解释是怎样演变的运算符号用汉字代替5X（1X2分之1+2X3分之1+3X4分之1.49X50分之1）5×（1/2+1/2x3+1/3x4+.+1/49x50）=5×（1-1/2+1/2-1/3+1/3-1/4.+1/49-1/50）

6.8x16.8加19.3x3.2简便运算先采我

7.5x2.3+2.5x3.1简便运算2.5×3×3.1+2.5×3.1＝2.5×〔2.3×3+3.1〕＝252.5*3*2.3+1.9*2.5+2.5*5*0.4=2.5*(6.9+1.9+2)=2.5*10.8=27

9.99x22.2+33.3x3.34简便运算=33.3×（6.66+3.34）=3339.99x22.2+33.3x3.34=11.1x(9.99x2+3x3.34)=11.1x(9.99x2+3x3.33+3x0.01)=11.1x(9

12.5x0.25x3.2如何简便运算12.5x0.25x3.2=（12.5×0.8）x（0.25x4）=10×1=10你好：12.5×0.25×3.2＝12.5×8×0.4×0.25＝（12.5×8）×（0.4×0.25）＝100×0.1