Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 43

Mental maths worksheets — Class 1 to 5, with answers

Free mental maths worksheets for Class 1 to 5: quick sums, doubles and halves, × 10, × 5, × 11, × 25, × 99 tricks — solve in your head, new numbers every set.

💡 Learn it first

🧠 The worksheets

🔄 New set of questions

Mental maths — Class 1–2 (Class 1–2)Mental maths — Class 3 (Class 3)Mental maths — Class 4–5 (Class 4–5)

Mental maths — Class 1–2

Class 1–2 · Worksheet 1 · set 43
Name:Date:Score:    / 20

Solve in your head.

  1. 16 − 5 =
  2. 14 − 9 =
  3. 10 − 6 =
  4. 50 + 9 =
  5. 12 − 1 =
  6. Double 5 =
  7. 70 + 1 =
  8. 20 − 15 =
  9. 2 + 2 =
  10. 80 + 6 =
  11. Double 9 =
  12. 2 + 3 =
  13. 90 + 4 =
  14. 10 + 8 =
  15. 12 − 10 =
  16. 2 + 8 =
  17. Double 7 =
  18. 7 + 10 =
  19. 7 + 2 =
  20. 20 + 9 =

Mental maths — Class 3

Class 3 · Worksheet 2 · set 43
Name:Date:Score:    / 20

Solve in your head.

  1. 100 − 58 =
  2. Half of 40 =
  3. Double 12 =
  4. 35 + 9 =
  5. 28 × 10 =
  6. Double 11 =
  7. 26 × 10 =
  8. Double 18 =
  9. 84 × 10 =
  10. Half of 36 =
  11. Double 39 =
  12. 99 × 10 =
  13. Double 13 =
  14. 37 × 10 =
  15. 100 − 30 =
  16. 100 − 71 =
  17. 87 × 10 =
  18. 100 − 41 =
  19. 100 − 54 =
  20. Half of 90 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 43
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 16 × 11 =
  2. 40 × 25 =
  3. 28 × 25 =
  4. 26 × 5 =
  5. 96 × 25 =
  6. 84 × 11 =
  7. 183 + 499 =
  8. 40 × 5 =
  9. 138 × 5 =
  10. 168 × 5 =
  11. 54 × 5 =
  12. 122 + 399 =
  13. 22 × 99 =
  14. 242 + 199 =
  15. 25 × 99 =
  16. 35 × 11 =

More worksheets

Questions

How can I improve my child’s mental maths?

Ten minutes a day: one sheet, timed, then check. Learn the tables and the tricks above, and try the TalentJR mental maths course.

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.