Printable · GCSE Foundation · ages 14-16
Substitution into formulae worksheet — GCSE Foundation
Fifteen questions on "substitution into formulae" — DfE statement A2. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.
Substitution into formulae worksheet — GCSE Foundation
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- 1.The formula for converting a distance in miles, m, to kilometres, k, is k = 8m ÷ 5. Work out k when m = 10.
- 2.The braking distance of a car, in metres, is estimated using the formula d = 0.4v² + 6, where v is the speed in mph. A car travelling at 35 mph brakes. Work out the estimated braking distance.
- 3.The formula connecting speed, distance and time is v = s ÷ t. Work out v, in km/h, when s = 180 and t = 4.
- 4.Work out the value of 5y + 9 when y = 0
- 5.A taxi fare in pounds is given by F = 2.50 + 1.20m, where m is the number of miles travelled. Sam takes a taxi for a journey of 6 miles. Work out the fare.
- 6.Work out the value of a² − 2b when a = −3 and b = 4.
- 7.Work out the value of 2x² when x = −3
- 8.Work out the value of n² − n when n = −3
- 9.Work out the value of 3n − 2 when n = 1
- 10.Work out the value of 3x² − 4x when x = −2.
- 11.Work out the value of 5m² + 3m when m = −2.4
- 12.Oliver has m stickers and gives 5 of them away. The number he has left is L = m − 5. Work out L when m = 8.
- 13.Work out the value of 4p² − 3 when p = 2.5
- 14.Work out the value of 3b − 4 when b = 6
- 15.Work out the value of (x − 4)/2 + 3 when x = 10
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