Finding the 20% of 45 With Decimal Method
To find 20% of 45, we first need to understand what percentage means. Percentage is a way of expressing a fraction or a portion of a whole as a fraction out of 100. So, 20% means 20 out of 100 or 20/100 as a fraction, which simplifies to 0.2 as a decimal.
Now, to find 20% of 45, we use the formula:
20% of 45 = (20/100) x 45
Here, we’re multiplying the decimal equivalent of 20% (0.2) by the number 45 to get the answer.
Simplifying the expression by multiplying the numerator and denominator by 5, we get:
20% of 45 = (20/100) x 45 = (1/5) x 45
Now, we can simplify this expression further by multiplying the numerator and denominator by 9:
20% of 45 = (1/5) x 45 = (1 x 9) / (5 x 9) x 45 = 9 / 45
Simplifying this expression, we get:
20% of 45 = 0.2 x 45 = 9
Therefore, 20% of 45 is equal to 9.
Finding the 20% of 45 With the Help of Vedic Math
In this problem, we will use the Vedic Math technique of “vertically and crosswise” to find 20% of 45. Vedic Math is a system of mathematics that originated in ancient India and used various techniques and principles to solve problems efficiently.
Here are the steps to find 20% of 45 using Vedic Math:
Step 1: Divide the number by 10 (move the decimal point one place to the left) to get 10% of 45, which is 4.5.
Step 2: Multiply 10% by 2 to get 20%.
10% x 2 = 4.5 x 2 = 9
Therefore, 20% of 45 using Vedic Math is 9.
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