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Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 8

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.

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🧠 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 8
Name:Date:Score:    / 20

Solve in your head.

  1. 10 + 8 =
  2. 50 + 1 =
  3. Double 3 =
  4. Double 9 =
  5. 10 + 2 =
  6. 30 + 2 =
  7. 20 + 9 =
  8. 4 + 4 =
  9. Double 1 =
  10. 15 − 10 =
  11. 4 + 9 =
  12. 14 − 5 =
  13. 8 + 3 =
  14. 18 − 6 =
  15. 18 − 5 =
  16. 4 + 2 =
  17. 18 − 3 =
  18. 10 + 3 =
  19. 4 + 6 =
  20. 16 − 15 =

Mental maths — Class 3

Class 3 · Worksheet 2 · set 8
Name:Date:Score:    / 20

Solve in your head.

  1. 100 − 68 =
  2. Half of 32 =
  3. Double 37 =
  4. Half of 64 =
  5. 35 × 10 =
  6. 40 + 9 =
  7. 60 + 9 =
  8. Half of 28 =
  9. 52 × 10 =
  10. 100 − 10 =
  11. 88 × 10 =
  12. Half of 56 =
  13. 64 + 9 =
  14. 100 − 83 =
  15. Half of 16 =
  16. Double 26 =
  17. 100 − 51 =
  18. Double 27 =
  19. 100 − 87 =
  20. 100 − 35 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 8
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 74 × 99 =
  2. 44 × 25 =
  3. 92 × 99 =
  4. 63 × 11 =
  5. 85 × 99 =
  6. 42 × 11 =
  7. 305 + 299 =
  8. 88 × 25 =
  9. 108 × 5 =
  10. 17 × 11 =
  11. 357 + 99 =
  12. 78 × 11 =
  13. 216 + 99 =
  14. 76 × 99 =
  15. 38 × 11 =
  16. 8 × 25 =

More worksheets

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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.