Year 8 - Deriving Formulae

Work out the value of the expression from a + 5 when a = 3

Work out the value of the expression from x - 9 when x = 20

work out this expression

p + 5 when p = -3

• 2

• -2

• -4

• -8

work out this expression

j/4 when j = - 20

• -5

• 5

• -10

• 10

work out this expression

8m - 5, when m = -2

• 21

• -21

• -15

• 11

work out this expression

20 - 3n when n = 9

• -9

• -13

• -7

• 7

work out this expression

q - 6 when q = 4

• -3

• -2

• -4

• 2

work out this expression

a + b when a = 6, and b = -3

• 3

• -3

• 9

• -9

3z + v when z = 8 and v = -20

• 4

• 6

• -6

• -4

find u/2 - 5 when u = 4

• -3

• 3

• -7

• 7