Decimal, Fraction and Percentage

Question 1

Write 8.5% as a decimal

Answer 1

0.085

Question 2

Write 0.215 as a percentage

Answer 2

21.5%

Question 3

Write 0.902 as a fraction
In its simplest form.

Answer 3

451/500

Question 4

Write 9/40 as a decimal

Answer 4

0.225

Question 5

Write 13/42 as a decimal
Round it to 2 decimal places.

Answer 5

0.31

Question 6

Write 37.5% as a fraction
In its simplest form

Answer 6

3/8

Question 7

Write 9/40 as a percentage

Answer 7

22.5%

Question 8

Write 7/8 as a percentage

Answer 8

87.5%

Question 9

Write these numbers in ascending order

62.8%, 13/21, 0.61, 2/3

Answer 9

0.61, 13/21, 62.8%, 2/3

Question 10

Write these numbers in descending order

14/25, 65%, 0.49, 25/43, 11/15, 54%

Answer 10

11/15, 64%, 25/43, 14/25, 54%, 0.49

Question 11

Work out
4/5x9/10
Write in its simplest form

Answer 11

18/25

Question 12

Work out
2/3x18

Answer 12

12

Question 13

Work out
5/6÷3
In its simplest form

Answer 13

5/18

Question 14

Work out
2/17÷2/5
In its simplest form

Answer 14

5/17

Question 15

Work out
2/5÷(6/5-7/9)+1/3
In its simplest form

Answer 15

73/57 or 1 17/56

Question 16

Work out
0.7²

Answer 16

0.49

Question 17

Ruby has a rope that is 8 meters long.
She says, “I need 9 pieces each 0.89 meters long.”

a)Will she have enough ribbon?
b) If not, how much meters short? If yes, how much meters long?

Answer 17

a) No
b) 0.01 meters short

Question 18

There is a rectangle that has a length of 5.6 cm and height of y
The area of the rectangle is 17.92 cm²
Find y

Answer 18

3.2 cm

Question 19

There is a rectangle that has a length of x and height of 2.4 cm.
The perimeter of the rectangle is 15.2 cm
Find x

Answer 19

5.2 cm

Question 20

Elle has £20 with her when she went shopping
She brought:
2 birthday cards at £2.70 each
1 toy at £6.50 each
1 book at £5.75 each

How much money have left after she brought these goods?

Answer 20

£2.35

Question 21

The original size of packet is 100g
The size of a packet of pasta is increased by one-quarter
The new size is later reduced by one-quarter

a)Is the new packet smaller, the same size or larger than the original?
b) If the packet is larger, how much grams is bigger? If the packet is smaller, how much grams is smaller?

Answer 21

a) smaller
b) 6.25g

Question 22

A ball is dropped from a height of 3 meters and is allowed to bounce repeatedly
Each time it rises to a height which is 80% of the height it fell from

What height does the ball rises to after the second bounce?

Answer 22

1.92 meters

Question 23

Annie earns £1300 a month.She spends 30% of this money on rent and 12% on bills.

How much of £1300 has she left?

Answer 23

£754

Question 24

A jar of coffee used to contain 520g

New packets one-fifth less
Work out how much the new packet contains.

Answer 24

416g

Question 25

A pair of jeans normally costs £40
In the sales there is 1/4 off

Work out how much the jeans are in the sales.

Answer 25

£30