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.Work out the value of 3a − 2b when a = 5 and b = 4
- 2.The volume of a cuboid is given by the formula V = lwh. Work out V, in cm³, when l = 2, w = 3 and h = 6.
- 3.Work out the value of 3n − 2 when n = 1
- 4.Work out the value of (x − 4)/2 + 3 when x = 10
- 5.Work out the value of 2x² when x = −3
- 6.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.
- 7.Grace says that 2(x + 1) and 2x + 2 always have the same value. Work out the value of both expressions when x = 3.
- 8.Work out the value of m² + 3m when m = −2
- 9.Work out the value of a² − 2b when a = −3 and b = 4.
- 10.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.
- 11.Work out the value of 5y + 9 when y = 0
- 12.Work out the value of n² − n when n = −3
- 13.A rectangle is x cm wide and twice as long as it is wide, so its area A cm² is given by A = 2x². Work out A when x = 3.
- 14.Work out the value of 4p² − 3 when p = 2.5
- 15.Work out the value of 5a + 2 when a = 3
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