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10.5乘0.75減0.5乘0.75的简便方法计算

10.5×0.75-0.5×0.75 =(10.5-0.5)×0.75 =10×0.75 =7.5

0.5X0.5X10X20 =10X20÷2÷2 =10X5 =50

10.4减9.6乘0.5用简便方法计算 =10.4-4.8 =5.6

=0.8*(10.5-1.5)=0.8*9=7.2

(3×5-10)+(0.14×5-0.62) =5+(0.7-0.62) =5+0.08 =5.08

解:0.038x5x0.6 10.5x8.3+10.5x1.7 102x0.5 3.29×99+3.29 0.72×98 =0.038x(5x0.6) =10.5x(8.3+1.7) =51 =3.29x(99+1) =0.72x(100-2) =0.038x3 =10.5x10 =3.29x100 =72-1.44 =0.114 =105 =329 =70.56 希望能帮到你,如果不明白还可以问!

64x0.25x0.5x1.25 =4x2x8x0.25x0.5x1.25 =(4x0.25)x(2x0.5)x(8x1.25) =1x1x10 =10

1)6.8*15*0.5=1.7*2*2*15*0.5=1.7*(2*15)*(2*0.5)=1.7*30*1=51 2)6.8*15*0.5=6.8*0.5*15=3.4*15=3.4*(10+5)=3.4*10+3.4*5=34+17=51 如何进行简便计算 在进行简便计算之前,要求学生对所学的性质、定律、规律等有透彻的理解和正确的使用。也就...

把10.1拆成10+0.1,然后用乘法分配律 5.14×10.1-0.514 =5.14×(10+0.1)-0.514 =5.14×10+5.14×0.1-0.514 =51.4+0.514-0.514 =51.4

24-4.8=19.2 希望能帮到你,如果你的问题解决了,麻烦点一下采纳,谢

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