4) Fractions And Percentages

Question 1

What do you do to compare, add or subtract fractions?

Answer 1

Write them with a common denominator.

Question 2

To add or subtract mixed numbers what does it help to do?

Answer 2

Convert them to improper fractions first.

Question 3

What is the reciprocal of a fraction?

Answer 3

Original fraction turned upside down.

Question 4

What do you do to multiply fractions together?

Answer 4

Multiply the numerators together + the denominators together.

Question 5

What do you do when dividing a fraction?

Answer 5

Multiply the number by its reciprocal.

Question 6

What do you do to convert a fraction to a decimal?

Answer 6

Divide the numerator by the denominator.

Question 7

What does ‘percentage’ mean?

Answer 7

‘Out of 100’.

Question 8

What is an example of a percentage?

Answer 8

100%.
75%.
50%.
25%.
0%.

Question 9

What do you multiply a fraction by to change it to a percentage?

Answer 9

100.

Question 10

What is meant by ‘simple interest’?

Answer 10

Interest paid out each year by banks + building societies.

Question 11

To increase a number by a percentage what do you do?

Answer 11

Work out the increase + add this to original number.

Question 12

What do you do to decrease a number by a percentage?

Answer 12

Work out decrease + subtract this from original number.