Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 73

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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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 73
Name:Date:Score:    / 20

Solve in your head.

  1. Double 7 =
  2. 14 − 3 =
  3. 11 − 5 =
  4. Double 3 =
  5. 13 − 7 =
  6. 12 − 11 =
  7. 20 − 5 =
  8. 4 + 9 =
  9. Double 1 =
  10. 30 + 2 =
  11. Double 5 =
  12. 14 − 12 =
  13. 10 + 3 =
  14. 11 − 3 =
  15. 80 + 2 =
  16. 20 − 16 =
  17. 7 + 5 =
  18. 17 − 3 =
  19. Double 2 =
  20. Double 8 =

Mental maths — Class 3

Class 3 · Worksheet 2 · set 73
Name:Date:Score:    / 20

Solve in your head.

  1. 100 − 68 =
  2. 90 × 10 =
  3. Double 36 =
  4. Half of 70 =
  5. 46 + 9 =
  6. 100 − 83 =
  7. 69 + 9 =
  8. 100 − 15 =
  9. Double 31 =
  10. 17 + 9 =
  11. 100 − 65 =
  12. 18 × 10 =
  13. 100 − 13 =
  14. 100 − 22 =
  15. Half of 58 =
  16. Double 20 =
  17. 59 × 10 =
  18. 33 × 10 =
  19. 54 + 9 =
  20. Double 45 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 73
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 78 × 5 =
  2. 76 × 11 =
  3. 21 × 99 =
  4. 92 × 25 =
  5. 422 + 199 =
  6. 82 × 5 =
  7. 362 + 399 =
  8. 43 × 99 =
  9. 72 × 25 =
  10. 68 × 25 =
  11. 39 × 99 =
  12. 81 × 99 =
  13. 166 + 399 =
  14. 34 × 99 =
  15. 86 × 5 =
  16. 126 × 5 =

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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.