99乘27的简便运算、59乘18加18乘40加18的简便运算、125乘56的简便运算、25乘44的简便运算（请回答）

分类: 作业答案 • 2021-12-19 11:38:41

问题描述：

答

2526521

答

99*27
=（100-1）*27
=100*27-1*27
=2700-27
=2673

答

99X27=100X27-27=2700-27=2673
59X18+18X40+18=18X(59+40+1)=18X100=1800
125X56=125X7X8=1000X7=7000
25X44=25X4X11=100X11=1100
操，居然提交不了

答

99*27=100*27-27=2700-27=2673
59*18+18*40+18=18*(59+40+1)=18*100=1800
125*56=125*8*7=1000*7=7000
25*44=25*4*11=100*11=1100

答

99x27
=(100-1)x27
=2700-27
=2673
59x18+18x40+18
=18x(59+40+1)
=18x100
=1800
125x56
=125x8x7
=1000x7
=7000
25x44
=25x4x11
=100x11
=1100

答

99乘27 = 100*27 - 27 = 2673
59*18+18*40*18 = (59+40+1)*18 = 1800
125乘56 = 125*4*14 = 500* 14 = 7000
25乘44 = 25*4*11 = 1100