www.qcfz.net > 29x29+71x29的简便算法

29x29+71x29的简便算法

=29x(71+29) =29x100 =2900

71x27+27x29 =(71+29)x27 =100x27 =2700

72*29+72*71-71 72*100-71 7200-71 7129

58x43+86x71简便计算 =29x86+86x71 =(29+71)x86 =100x86 =8600

=42×(29+71)÷35 =42×100÷7÷5 =600÷5 =120

58x29+71x53简便算式 58x29+71x53 =58*(29+71)-71*5 =58*100-71*5 =5800-355 =5445

=29×(71+29) =29×100 =2900

167x29+167×71 =167×(29+71) =167×100 =16700

511x0.71+11x9.29+525x0.29 =511X0.71+11X10-11X0.71+525X1-525X0.71 =11X10+525+(511-11-525)X0.71 =635-17.75 =617.25

72x125 =9x8x125 =9x(8x125) =9x1000 =9000 64x99+64 =64x(99+1) =64x100 =6400 8.29+3.7+0.71+6.3 =(8.29+0.71)+(3.7+6.3) =9+10 =19 4900÷25÷4 =4900÷(25x4) =4900÷100 =49 17×43-43×7 =43×(17-7) =43×10 =430 54.3-12.19+25.7-17.81 =(54.3+2...

网站地图

All rights reserved Powered by www.qcfz.net

copyright ©right 2010-2021。
www.qcfz.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com