简便计算12×0点三六 2点四五

12x0.36+2.45=4.32+2.45=6.77如有帮助请采纳,如对本题有疑问可追问,Good luck!

展开全部12点5+3点六五*2点4+2点四四简便运算12.5+3.65*2.4+2.44=12.5+8.76+2.44=12.5+11.2=26.7

12.5*6.3*2.4=12.5*6.3*0.3*8=(12.5*8)*(6.3*0.3)=100*1.89=189

12.3x5.6-2.3x5.6=5.6x(12.3-2.3)=5.6x10=56

12.5x3.2x2.5=12.5x(8x0.4)x2.5=(12.5x8)x(0.4x2.5)=100x1=100

27.38-5.34+2.62-4.66=(27.38+2.62)-(5.34+4.66)=30-10=20

2.5x0.65x4=2.5x4x0.65=10x0.65=6.5谢谢,请采纳

12x(1/2+3/4-5/6);=12x1/2+3/4x12-5/6x12;=6+9-10;=15-10;=5

原式=2.36x99+2.36=2.36x99+2.36x1=2.36x(99+1)=2.36x100=236

零点3*2点5*0点四=0.3*1=0.3 多看概念 基础才好

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