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National 4 Applications of Mathematics

Ratio Answer Sheet

Name: __________________________Date: ___________________________Class: __________________________

Use this sheet to check final answers. Pupils should still show working where needed.

  1. 1

    Simplify the ratio 16:24:20.

    Answer: 4:6:5

  2. 2

    A map scale is 1 cm:3 km. What real distance is shown by 3 cm?

    Answer: 9 km

  3. 3

    The ratio of red counters to blue counters is 3:8. There are 24 red counters. How many blue counters are there?

    Answer: 64

  4. 4

    A recipe uses 170 g of pasta for 2 people. How much pasta is needed for 6 people?

    Answer: 510 g

  5. 5

    A recipe uses flour and oats in the ratio 3:1. How many cups of oats are needed for 9 cups of flour?

    Answer: 3 cups

  6. 6

    5 boxes hold 60 calculators. If each box holds the same number, how many calculators are in 9 boxes?

    Answer: 108

  7. 7

    Write an equivalent ratio to 1:6 by multiplying each part by 6.

    Answer: 6:36

  8. 8

    Simplify the ratio 10:30.

    Answer: 1:3

  9. 9

    Share £35.00 in the ratio 1:6.

    Answer: £5.00 and £30.00

  10. 10

    Simplify the ratio 16:20:28.

    Answer: 4:5:7