Calculate 70% of 90: Step-by-Step Percentage Problem

Question

What is 70% of 90?

00:00 Find the part of the whole: Calculate 70% of 90?

00:04 Apply the formula to convert percentages to fractions

00:10 The fraction has a numerator equal to the percentage number and a denominator of 100

00:14 Apply this formula to our exercise

00:21 Multiply the fraction by our whole number

00:26 Break down 70 into factors of 7 and 10, and 100 into factors of 10 and 10

00:41 Break down 90 into factors of 9 and 10

00:46 Reduce wherever possible

00:54 This is the solution

To solve the problem of finding 70% of 90, we will use the percentage calculation method:

Step 1: Convert the percentage to a decimal. 70% is equivalent to $\frac{70}{100} = 0.70$ .
Step 2: Multiply the base number, 90, by the decimal equivalent of the percentage.

Let's perform the calculation:

$0.70 \times 90 = 63$

Therefore, 70% of 90 is $\mathbf{63}$ .