Checking and securing understanding of simplifying | Maths

Starter quiz

Collect the following like terms: $3a + 5a = \square a$
- '8' ✓
Simplify the following: $4b - 2b = \square b$
- 2 ✓
- 6
- 8
Which statement is true?
- $5c^2 + 3c^2 = 8c^2$ ✓
- $5c^2 + 3c^2 = 2c^2$
- $5c^2 + 3c^2 = 8c^4$
Simplify the following: $7d - 4(d+2)= 3d$ ______
- '-8' ✓
Simplify the following: $9f - 5f = \square f$
- '4' ✓
Simplify the following: $5j - 2j +j^2= \square$
- $j^2+3j$ ✓
- $j^2-3j$
- $4j$