Question

7.5乘13除6.5的简便运算怎么做？

Answer 1

7.5乘13除6.5的简便运算怎么做？

7.5*13/6.5
=7.5*（13/6.5）
=7.5*2
=15

6.5乘10.1的简便运算怎么做fl=3

6.5×10.1
=6.5×(10+0.1)
=6.5×10+6.5×0.1
=65+0.65
=65.65

6.5减1.8乘2.3的简便运算怎么做?

6.5-1.8x2.3=6+0.5-(2-0.3)x2.3
=6+0.5-4.6+0.69
=(6-4.6)+(0.5+0.69)
=1.4+1.19
=2.59.

7.5乘3.1除25的简便运算

7.5×3.1÷25
=(7.5÷25）×3.1
=0.3×3.1
=0.93

7.5乘99.9怎么简便运算?

7.5x99.9
=7.5x(100-0.1)
=7.5x100-7.5x0.1
=750-0.75
=749.25

163乘13减23乘169用简便运算怎么做

163乘13减23乘169用简便运算怎么做
163乘13减23乘169
=163*13-23*169
=13*163-23*163-23*6
=163*（13-23）-23*6
=-1630-138
=-1768

7.5×0.36-0.36×6.5简便运算

可以用乘法分配律
7.5*0.36-6.5*0.36=（7.5-6.5）*0.36=1*0.36=0.36

3.4乘7.5 7.5乘7.6—7.5的简便运算

因题干条件不完整，缺少必要条件，不能正常作答

7.5*4.9+5.1简便运算怎么做

=7.5×（5－0.1）+5.1
=37.5-0.75+5.1
=37.5+5.25=42.75

456-13乘9-68的简便运算怎么做

456-13×9-68
=456-117-68
=456-（117+68）
=456-186+1
=270+1
=271