Page 170 - Start Up Mathematics_8 (Non CCE)

EXERCISE 11.1

1. Write each of the following as percent:
6 3 2 12
(a) (b) (c) (d) (e) 0.08
25 8 5 125

12 18
(f) 6.25 (g) (h) 0.16 (i) 21 : 75 (j)
45 625
2. Convert the following percentages to fractions and ratios:
(a) 30% (b) 0.25% (c) 250% (d) 0.005% (e) 65%
3. Express the following percentages as decimals:
1 1
(a) 36% (b) 7 % (c) 0.15% (d) 12.25% (e) %
2 6

MATHS LAB ACTIVITY

Connect the dot beside each fraction to its equivalent decimal and percent.

Finding Percentage of a Number
To find the percentage of a number, follow these steps:
Step 1: Let the number be x and the desired percent be p%.
Step 2: Multiply x by p and divide by 100 to obtain the desired p% of x.

px¥ px
p% of x = =
100 100

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