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 y = x² + 1 gives y in terms of x. Work out the value of y when x = −2.y = x² + 1
- 2.Work out the value of n² − n when n = −3
- 3.Work out the value of 3x² − 4x when x = −2.
- 4.A person's body mass index is given by the formula B = m ÷ h², where m is the mass in kg and h is the height in metres. Work out B, to 1 decimal place, when m = 68 and h = 1.6.
- 5.The formula connecting speed, distance and time is v = s ÷ t. Work out v, in km/h, when s = 180 and t = 4.
- 6.The formula for converting a distance in miles, m, to kilometres, k, is k = 8m ÷ 5. Work out k when m = 10.
- 7.Work out the value of 2x² when x = −3
- 8.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.
- 9.Work out the value of 4p² − 3 when p = 2.5
- 10.Work out the value of 2(x + 2) when x = −5
- 11.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.
- 12.Work out the value of 5m² + 3m when m = −2.4
- 13.Work out the value of 3b − 4 when b = 6
- 14.Work out the value of 3a − 2b when a = 5 and b = 4
- 15.Work out the value of 5a + 2 when a = 3
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