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Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 41

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

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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 41
Name:Date:Score:    / 20

Solve in your head.

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

Mental maths — Class 3

Class 3 · Worksheet 2 · set 41
Name:Date:Score:    / 20

Solve in your head.

  1. Half of 44 =
  2. 75 × 10 =
  3. 54 × 10 =
  4. Half of 74 =
  5. Half of 92 =
  6. 69 × 10 =
  7. 90 × 10 =
  8. Half of 16 =
  9. 76 + 9 =
  10. 100 − 45 =
  11. Double 31 =
  12. 100 − 85 =
  13. 60 × 10 =
  14. 100 − 82 =
  15. Half of 90 =
  16. Half of 42 =
  17. Double 29 =
  18. Double 24 =
  19. 81 × 10 =
  20. Half of 32 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 41
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 59 × 11 =
  2. 17 × 11 =
  3. 60 × 25 =
  4. 26 × 99 =
  5. 359 + 299 =
  6. 96 × 99 =
  7. 72 × 5 =
  8. 18 × 11 =
  9. 40 × 25 =
  10. 134 × 5 =
  11. 62 × 5 =
  12. 80 × 25 =
  13. 122 × 5 =
  14. 84 × 99 =
  15. 24 × 25 =
  16. 29 × 99 =

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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.