369-e.net
当前位置:首页>>关于25x38x12的简便运算的资料>>

25x38x12的简便运算

=(25x4)x(38x3)=100x114=11400

25x10+25x2250+50=300

25x12=25x4x3=100x3=300

原式=25x(4x3) =(25x4)x3 =100x3 =300

25x38x12=(25x30+25x8)x10x2=(750+200)x10x2=950x10+950x2=9500+1900=11400

简便计算25x32x12=25x32x4x3=(25x4)x(32x3)=100x96=9600

25X(10十2)=25X10十25X2=250十50=300

25x12=25x10+25X2=300

25x12-25x(-89)-25=25x12+25x89+25=25x(12+89+1)=25x102=25x(100+2)=25x100+25x2=2500+50=2550

1. 25x12=25x(4x3)=(25x4)x3=100x3=300 2. 25x12=5x5x2x2x3=(5x2)x(5x2)x3=10x10x3=300 3. 25x(10+2)=25x10+25x2=250+50=300 4. (20+5)x12=20x12+5X12=20x(3x4)+5x(4x3)=60x4+(5x4)x3=240+60=300

ndxg.net | 9371.net | bfym.net | zhnq.net | zdhh.net | 网站首页 | 网站地图
All rights reserved Powered by www.369-e.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com