Question

求12.5x0.25x3.2和12.5x4.5+4.5x12.5+12.5的简便计算 快明天就没用了！

Answer 1

求12.5x0.25x3.2和12.5x4.5+4.5x12.5+12.5的简便计算 快明天就没用了！

12.5×0.25×3.2
=12.5×0.25×4×0.8
=(12.5×0.8)×(0.25×4)
=10×1
=10
12.5×4.5+4.5×12.5+12.5
=12.5×(4.5+4.5+1)
=12.5×10
=125

12.5x0.25x3.2如何简便运算

12.5x0.25x3.2
=（12.5×0.8）x（0.25x4）
=10×1
=10

简便计算12.5十12.5x1.5

12.5十12.5x1.5
=12.5*(1+1.5)
=12.5*2.5
=12.5*10/4
=125/4

4.5x0.98+9.8x0.55的简便计算和【1.1+1.1+1.1+1.1】x12.5简便计算

4.5x0.98+9.8x0.55
=0.45×9.8＋0.55×9.8
=﹙0.45＋0.55﹚×9.8
=9.8
【1.1+1.1+1.1+1.1】x12.5
=1.1×﹙4×12.5﹚
=1.1×50
=55

(0.08十 4)x0.25x12.5的简便计算

(0.08十 4)x0.25x12.5
=0.08x0.25x12.5+4x0.25x12.5
=0.08×12.5×0.25+1×12.5
=0.25+12.5
=12.75
乘法分配律

16x12.5x4.3的简便计算

16x12.5x4.3
=8x12.5x2x4.3
=（8x12.5）x（2x4.3）
=100x8.6
=860
希望帮到你 望采纳 谢谢 加油~

1.35x0.25x12.5怎么简便计算

1.35x0.25x12.5
=135/100x1/4x100/8
=135/32
=4又32分之7
=4.21875

3.5x125% 12.5x0.24 51x12.5%简便计算

3.5x125%=7/2x5/4=35/8
12.5x0.24=2.5x5x0.24=2.5x1.2=5/2x12/10=60/20=3
51x12.5%=51x0.125=51x1/8=51/8

0.8x32.4x12.5简便计算

0.8*32.4*12.5
=0.8*12.5*32.4
=10*32.4
=324