Question

4*0.45+7.2的简便运算

Answer 1

4*0.45+7.2的简便运算

原式
=1.8+4x1.8
=1.8x(1+4)
=1.8x5
=9
供参考。

5.2-7.2×0.45的简便运算

答：4.5*3.6+5.2*0.45 =4.5*3.6+0.52*4.5 =4.5*(3.6+0.52) =4.5*4.12 =4*4.12+0.5*4.12 =16.48+2.06 =18.54

4×0.45+7.2的简便方法

原式=4×0.45+7.2
=1.8+7.2
=9

0.45-0.45*0.6的简便运算

0.45-0.45*0.6
=0.45x(1-0.6)
=0.45x0.4
=0.18

7.2÷(l.2╳4)简便运算

7.2÷(l.2╳4)
=1.8X4÷(l.2╳4)
=1.8÷1.2
=18÷12
=3÷2
=1 .5

104*0.45简便运算

104 X0.45
=(100+4)X0.45
=100X0.45+4X0.45
=45+1.8
=46.8

0.45乘99-0.45简便运算

0.45×99-0.45
=0.45×(99-1)
=0.45×(100-2)
=0.45×100-0.45×2
=45-0.9
=44.1

2.6×0.45÷1.3简便运算

=1.3×2×0.45÷1.3
=1.3×0.9÷1.3
=0.9

45×5.5×0.45的简便运算

45×5.5×0.45的简便运算
45×5.5×0.45
=247.5*0.45
=111.375
直接计算

0.45*1.2*2简便运算

0.45×1.2×2
=0.9×1.2
=1.08