Math 9 · Unit 2: Expressions and formulae · Cambridge Lower Secondary Maths Stage 9

Questions

1. 1. Add 2 to 4. What is the result?

   • 24
   • 2
   • 8
   • 6
   Check

2. 2. Add 2 to 10. What is the result?

   • 12
   • 8
   • 102
   • 20
   Check

3. 3. Add 2 to x. Which expression is correct?

   • x + 2
   • 2
   • 2x
   • x2
   Check

4. 4. Add 2 to z. Which expression is correct?

   • 2z
   • z²
   • z + 2
   • z − 2
   Check

5. 5. Subtract 3 from 5. What is the result?

   • 15
   • −2
   • 8
   • 2
   Check

6. 6. Subtract 3 from 8. What is the result?

   • 5
   • 24
   • 11
   • 3
   Check

7. 7. Subtract 3 from y. Which expression is correct?

   • y/3
   • 3y
   • 3 − y
   • y − 3
   Check

8. 8. Subtract 3 from z. Which expression is correct?

   • z − 3
   • 3z
   • z/3
   • 3 − z
   Check

9. 9. Multiply 2 by 5. What is the result?

   • 0.4
   • 10
   • 7
   • 25
   Check

10. 10. Multiply 4 by 5. What is the result?

    • 54
    • 20
    • 24
    • 9
    Check

11. 11. Multiply a by 5. Which expression is correct?

    • a5
    • 5a
    • a/5
    • a + 5
    Check

12. 12. Multiply b by 5. Which expression is correct?

    • b + 5
    • b/5
    • b5
    • 5b
    Check

13. 13. Divide 15 by 5. What is the result?

    • 10
    • 20
    • 75
    • 3
    Check

14. 14. Divide 30 by 5. What is the result?

    • 35
    • 6
    • 150
    • 25
    Check

15. 15. Divide a by 5. Which expression is correct?

    • 5a
    • a − 5
    • 5/a
    • a/5
    Check

16. 16. Divide b by 5. Which expression is correct?

    • b − 5
    • b/5
    • 5b
    • 5/b
    Check

17. 17. I think of a number n. Match each statement to its expression.

    • I add 15
    • I subtract 15
    • I multiply by 15
    • I divide by 15
    • I subtract the number from 15

    • n + 15
    • 15n
    • n − 15
    • 15 − n
    • n/15
    Check

18. 18. Zara adds 1 to her number n. Which expression is correct?

    • n + 1
    • 1n
    • n − 1
    • 1 − n
    Check

19. 19. Zara subtracts 10 from her number n. Which expression is correct?

    • 10n
    • n − 10
    • n/10
    • 10 − n
    Check

20. 20. Zara multiplies her number n by 100. Which expression is correct?

    • n + 100
    • n/100
    • n100
    • 100n
    Check