## Percentages Exercise

1.Write these numbers as percentages:

 (a) fifty five hundredths (b) ninety nine hundredths (c) eight tenths (d) one hundredth (e) one tenth (f) three hundred thousandths

2. Find:

 (a) 10% of 300 (b) 25% of 400 (c) 12% of 100 (d) 8% of 400 (e) 12.5% of 100 (f) 65% of 200 (g) 1% of 90 (h) 120% of 300 (i) 200% of 500 (j) 35% of 360 (k) 64% of 200 (l) 52% of 55

3.

 Frank sells Christmas cards for a charity .

a. Frank gives 40% of the money he earns to the charity. If he earned \$150 last week how much did he give to charity?
b. He was given 50 boxes of cards to sell and he has sold 60% of them. How many does he have left?
c. He has sold cards to 75% of the 80 families who live in his apartment block. How many families has he sold cards to?
d. If he eventually sells cards to 70 out of the 80 families, what percentage will this be?

4. Express as a percentage:

 (a) 12 out of 100 (b) 80 out of 200 (c) 90 out of 90 (d) 49 out of 50 (e) 30 out of 80 (f) 48 out of 60 (g) 9 out of 20 (h) 9 out of 12 (i) 10 out of 250 (j) 30 out of 90 (k) 27 out of 30 (l) 30 out of 900

5. Find the missing percentage:

 (a) 20 is ___% of100 (b) 9 is ___% of18 (c) 43 is ___% of 50 (d) 6 is ___% of 10 (e) 7 is ___% of 25 (f) 3 is ___% of 5 (g) 16 is ___% of 25 (h) 12 is ___% of 48 (i) 18 is ___% of 50 (j) 150 is ___% of 75 (k) 21 is ___% of 25 (l) 3 is ___% of 50
 6. a. Ellie the elephant spends 60% of her time eating. How many hours does she spend each day eating? b. Marina has a gold bracelet that weighs 90 grams. 45% of the bracelet is pure gold. How many grams of gold did she have in the bracelet? c. An apple weighs 160 grams. 85% of the apple is water. How many grams of water are there in the apple? d. A goal-kicker in rugby league is successful with 32 out of 40 of his kicks. What is his success rate as a percentage? e. I score 19 out of 60 in a test. What is this as a percentage (to the nearest whole number)? f. A tennis player is successful in getting 65 out of 80 of her first serves in court. What is this success rate as a percentage (to the nearest whole number)?