Expressions and Substitutions No Negatives

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
3ab

• 10

• 12

• 15

• 36

Simplify the Expression: 5(x + 2) + 2x

• 7x + 2

• 7x + 10

• 5x + 4

• 7x + 7

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
2a

• 5

• 6

• 8

• 10

Choose the phrase that matches the expression   21h

• 21 more friends than expected at the party

• 21 more horses in the pasture

• 21 dollars per hour

• 21 balloons were popped at the party

Simplify the Expression: 10x - 3(2x + 8)

• 4x - 24

• -4x + 24

• 16x - 24

• 14x - 6

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
a + b   

• 7

• 8

• 9

• 6

Evaluate 8a - b if a = 10 and b = 6

• 74

• 38

• 86

• 8106

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20

• 24

• 44

• 4