Algebraic Expressions: To check progress

Which expression is equivalent to x + x + x + 3?

Simplify the expression 5y + 2y + 6x + 2y – x

Collect like terms to simplify this expression

Ana wants to multiply out the brackets in the expression 2(3a-1).

She writes 2(3a-1)= 6a - 1.

Ana is wrong. Explain why.

Expand 4(x + 2y)

Expand and simplify 3(a+2b) + a- 7b

Write down an expression equivalent to 6(x + 3y + 5)?

Which expression is equivalent to

Write your answer in its simplest form

Expand and simplify 2(x + 5x + 9) + x(1 + 2)+ 3

The list shows some expressions. Two of the expressions always have the same value as 4y.

Which are they?

a) 2(y + y)

b) 2y + y

c) 2y × 2y

d) 2y + 2y

e) 2 + 2y

Which expression represents the perimeter of the above triangle?

Which expression represents the perimeter of the above rectangle?

Expand this expression and collect like terms

5(2a – 3b) – 2(a + 6b)