Page 151 - Start Up Mathematics_5

EXERCISE 11.1

1. Look at the following grids and write the percentage represented.

(a) (b) (c)

2. Shade the indicated percentages in the grids.

(a) 43% (b) 52% (c) 78%

3. Convert the following percentages to fractions.
(a) 3% (b) 8% (c) 11% (d) 15% (e) 36% (f) 44%

(g) 52% (h) 67% (i) 79% (j) 82% (k) 90% (l) 68%
4. Convert the following percentages to decimals.

(a) 5% (b) 7% (c) 13% (d) 18% (e) 28% (f) 35%
(g) 48% (h) 51% (i) 64% (j) 270% (k) 185% (l) 320%

5. Convert the following fractions to percentage.

(a) 2 (b) 2 (c) 5 (d) 14 (e) 9 (f) 41
20 5 8 25 10 50

(g) 3 (h) 74 (i) 22 (j) 45 (k) 13 (l) 55
8 40 55 50 55 80
6. Convert the following decimals to percentage.

(a) 0.6 (b) 0.15 (c) 0.24 (d) 0.01 (e) 0.08 (f) 0.38
(g) 0.026 (h) 0.184 (i) 3.062 (j) 15.98 (k) 25.13 (l) 58.25

Percentage of a Number or a Quantity
To find the percentage of a number or a quantity, we change the percentage into fraction
and ‘of’ to the sign of multiplication.

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