Algebraic Expressions- Modeling,Translating & Evaluating

Evaluate the following expression 3ab; when a = 3, b = 4 and c = 5.

• 10
• 12
• 15
• 36

Evaluate 6h + 30; when h = 6

• 36
• 66
• 96
• 60

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

• 3
• 1 1/3
• 4
• 1/3

Evaluate 2r + 1 if r = 3

• 5
• 6
• 7
• 8

Write an algebraic expression for: the product of 5 and a number n.

• 5 + n
• n + 5
• 5n
• 5/n

Substitution is when you.....

• Replace a variable with a number
• Replace a coefficient with a variable
• Add or subtract a constant
• Add or subtract like terms

Evaluate 4y if y = 3

• 7
• 12
• 43
• 34

Evaluate the expression 18 divided by 2a when a = 3

• 3
• 6
• 27
• 9

• 10
• 76
• - 12
• 12

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

• 74
• 38
• 86
• 8106