Question

27.27÷4.5÷2简便运算

Answer 1

27.27÷4.5÷2简便运算

原式等于
27.27÷（4.5×2）
=27.27÷9
=3.03
所以原式的计算结果为3.03

4.5×6.7-2×4.5+4.5×5.3简便运算

4.5×6.7-2×4.5+4.5×5.3
＝4.5×（6.7-2+5.3）
＝4.5×（6.7+5.3-2）
＝4.5×(12-2)
＝4.5×10
=45

4.5×10.2简便运算

4.5×10.2
=4.5×(10+0.2)
=4.5×10+4.5x0.2
=45+0.9
=45.9

9.9*4.5+4.5的简便运算

9.9*4.5+4.5
=（10-0.1）*4.5+1*4.5
=10*4.5-0.1*4.5+1*4.5
=45-0.45+4.5
=45+4.5-0.45
=49.5-0.45
=49.05

4.5×73+27×4.5简便运算

4.5×73+27×4.5
=（73+27）×4.5
=100×4.5
=450

39.78÷4.5÷0.4简便运算

39.78÷(4.5x4)
=39.78÷18
=2.21

4.5乘5.12简便运算。

4.5×5.12
=4.5×2×2.56
=9×2.56
=（10-1）×2.56
=10×2.56-1×2.56
=25.6-2.56
=23.04

简便运算：4.5*9.9*0.45

4.5×9.9×0.45
=4.5×（10-0.1）×0.45
=4.5×10×0.45-4.5×0.1×0.45
=4.5²-0.45²
=（4.5+0.45）（4.5-0.45）
=4.95×4.05
=（5-0.05）（4+0.05）
=20-0.2+0.25-0.0025
=20.0475

3.03×4.5的简便运算

3.03×4.5的简便运算
3.03×4.5
=13.5+0.135
=13.635.

4.5*9.9的简便运算

=4.5×（10-0.1）
=4.5×10-4.5×0.1
=45-0.45
=44.55