37.5
First make the divisor (0.8) a whole number by multiplying it by some other number and also multiply the dividend (30) by the same number. Then do the division as normal.
When making the divisor a whole number it is usual to use a power of 10 (ie multiply by 10, 100, 1000, etc). In this case multiply the 0.8 by 10 to get 8, and also multiply the 30 by 10 to get 300. Then:
30 ÷ 0.8 = (30 × 10) ÷ (0.8 × 10) = 300 ÷ 8
And this can be solved in the normal way by long division:
300 ÷ 8 = 37 4/8 = 37 ½ = 37.5
4
-35
40
30
5
x=8
210 divided by -7
When any number is divided by a negative number the result is negative. So, 120 / -4 = -30
How Do You Solve a Problem Like Maria - 2008 1-6 was released on: USA: 30 June 2008
0.6
3/10 30% is the same as 0.3 it's much easier to solve this problem if you think of it like that.
Using algebra to solve this problem (12 + .25x = 30), the answer (x) is 72.