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You could find 5 p.c of any quantity in 4 seconds utilizing this trick. So what’s the trick?
Trick: Divide the quantity by 2 and transfer the decimal level one place to the left. The method simply includes two straightforward steps as proven within the following examples.
Instance #1: 5% of 36
Step 1: Divide 36 by 2.
36/2 = 18 = 18.0
Step 2: Transfer the decimal level one place to the left.
1.8
5% of 36 = 1.8
Instance #2: 5% of 180
Step 1: Divide 180 by 2.
180/2 = 90 = 90.0
Step 2: Transfer the decimal level one place to the left.
9.00
5% of 180 = 9
Instance #3: 5% of 13
Step 1: Divide 13 by 2.
13/2 = 6.5
Step 2: Transfer the decimal level one place to the left.
0.65
5% of 13 = 0.65
Instance #4: 5% of 650
Step 1: Divide 650 by 2.
650/2 = 325 = 325.0
Step 2: Transfer the decimal level one place to the left.
32.50
5% of 650 = 32.5
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