Math 7 · Unit 2: Expressions, formulae and equations · Cambridge Lower Secondary Maths Stage 7

Questions

1. 1. Match each expression to its simplified expression.

   • a + a
   • 3a + a
   • a + a + a
   • 5a + 4a
   • 2a + 2a + 2a

   • 4a
   • 9a
   • 2a
   • 6a
   • 3a
   Check

2. 2. True or false? b + 2b = 3b

   • True
   • False
   Check

3. 3. True or false? 4d + 2d = 5d

   • True
   • False
   Check

4. 4. True or false? 6f + 4f = 11f

   • True
   • False
   Check

5. 5. True or false? c + c + c = 3c

   • True
   • False
   Check

6. 6. True or false? h + 3h + 5h = 8h

   • True
   • False
   Check

7. 7. True or false? 7v + 2v + v = 10v

   • True
   • False
   Check

8. 8. Each of these expressions simplifies to 3s or 5s. Which does each rectangle A to E simplify to?

   • A 5s, B 3s, C 5s, D 3s, E 5s
   • A 5s, B 5s, C 3s, D 5s, E 3s
   • A 5s, B 3s, C 3s, D 5s, E 5s
   • A 3s, B 5s, C 5s, D 3s, E 3s
   Check

9. 9. True or false? 7b − 2b = 3b

   • True
   • False
   Check

10. 10. True or false? 4d − 2d = 2d

    • True
    • False
    Check

11. 11. True or false? 6f − f = 6

    • True
    • False
    Check

12. 12. True or false? 8c − 2c − 3c = 3c

    • True
    • False
    Check

13. 13. True or false? 9h − h − h = 7h

    • True
    • False
    Check

14. 14. True or false? 10v − 6v − v = 4v

    • True
    • False
    Check

15. 15. Simplify 5p + p.

    • 6p
    • 5p
    • 6
    • 5p²
    Check

16. 16. Can 6p + 2 be simplified?

    • Yes
    • No
    Check

17. 17. Can 5n − 2w be simplified?

    • Yes
    • No
    Check

18. 18. Simplify 8u − u.

    • 7u
    • 8
    • 7
    • 8u
    Check

19. 19. Pedro has striped, checked and spotted bricks. A striped brick is x long, a checked brick is y long and a spotted brick is z long. Work out the total length of the arrangement of bricks. Give your answer in its simplest form.

    • x³
    • 3x
    • x + 3
    • 3
    Check

20. 20. Pedro has striped, checked and spotted bricks. A striped brick is x long, a checked brick is y long and a spotted brick is z long. Work out the total length of the arrangement of bricks. Give your answer in its simplest form.

    • 2z
    • z + 2
    • z²
    • 4z
    Check