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 temperature in Fahrenheit, F, to Celsius, C, is C = 5(F − 32) ÷ 9. Work out C, to 1 decimal place, when F = 98.6.
- 2.Work out the value of (x − 4)/2 + 3 when x = 10
- 3.Work out the value of m² + 3m when m = −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.Work out the value of a² − 2b when a = −3 and b = 4.
- 6.Work out the value of 3n − 2 when n = 1
- 7.Work out the value of 5y + 9 when y = 0
- 8.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.
- 9.Work out the value of 2x² when x = −3
- 10.Work out the value of 3x² − 4x when x = −2.
- 11.Work out the value of n² − n when n = −3
- 12.The formula y = x² + 1 gives y in terms of x. Work out the value of y when x = −2.y = x² + 1
- 13.Work out the value of 5m² + 3m when m = −2.4
- 14.Grace says that 2(x + 1) and 2x + 2 always have the same value. Work out the value of both expressions when x = 3.
- 15.Work out the value of 3b − 4 when b = 6
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