4-minute number quiz — Solid Number

HCF/LCM

Question 1. For S2–S3 revision, answer: HCF of 36 and 48 is

Inequality

Question 2. Exam-style practice: Solve 1−2x > 7.

Reverse %

Question 3. Without a calculator, find: After 25% off, price is $900. Marked price?

Directed numbers

Question 4. Exam-style practice: −12÷(−3)×2=

Inequality

Question 5. Select the best option: Solve 1−2x > 7.

HCF/LCM

Question 6. Select the best option: HCF of 36 and 48 is

Scientific notation

Question 7. Number & Algebra check: 41000 in scientific notation is

Expand

Question 8. Before checking, choose: (x+3)(x−3)=

Reverse %

Question 9. Number & Algebra check: After 25% off, price is $900. Marked price?

Simultaneous

Question 10. Quick drill — solve: x−y=3, x+y=11. Then x=

Reverse %

Question 11. Choose the correct answer: After 25% off, price is $900. Marked price?

Simultaneous

Question 12. Exam-style practice: x−y=3, x+y=11. Then x=

Percentage

Question 13. Without a calculator, find: 80 increased by 15% is

Factorise

Question 14. Quick drill — solve: x²−5x−14=

Inequality

Question 15. Quick drill — solve: Solve 1−2x > 7.

Scientific notation

Question 16. Warm-up question: 41000 in scientific notation is

HCF/LCM

Question 17. Warm-up question: HCF of 36 and 48 is

HCF/LCM

Question 18. Choose the correct answer: HCF of 36 and 48 is

Negative index

Question 19. For S2–S3 revision, answer: Simplify a⁵÷a⁸ with positive index.

Scientific notation

Question 1. For S2–S3 revision, answer: HCF of 36 and 48 is

Question 2. Exam-style practice: Solve 1−2x > 7.

Question 3. Without a calculator, find: After 25% off, price is $900. Marked price?

Question 4. Exam-style practice: −12÷(−3)×2=

Question 5. Select the best option: Solve 1−2x > 7.

Question 6. Select the best option: HCF of 36 and 48 is

Question 7. Number & Algebra check: 41000 in scientific notation is

Question 8. Before checking, choose: (x+3)(x−3)=

Question 9. Number & Algebra check: After 25% off, price is $900. Marked price?

Question 10. Quick drill — solve: x−y=3, x+y=11. Then x=

Question 11. Choose the correct answer: After 25% off, price is $900. Marked price?

Question 12. Exam-style practice: x−y=3, x+y=11. Then x=

Question 13. Without a calculator, find: 80 increased by 15% is

Question 14. Quick drill — solve: x²−5x−14=

Question 15. Quick drill — solve: Solve 1−2x > 7.

Question 16. Warm-up question: 41000 in scientific notation is

Question 17. Warm-up question: HCF of 36 and 48 is

Question 18. Choose the correct answer: HCF of 36 and 48 is

Question 19. For S2–S3 revision, answer: Simplify a⁵÷a⁸ with positive index.

Question 20. Timed practice — answer: 41000 in scientific notation is