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Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 50

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 50
Name:Date:Score:    / 20

Solve in your head.

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

Mental maths — Class 3

Class 3 · Worksheet 2 · set 50
Name:Date:Score:    / 20

Solve in your head.

  1. 100 − 63 =
  2. Double 48 =
  3. 85 + 9 =
  4. Half of 100 =
  5. 100 − 58 =
  6. Half of 88 =
  7. 76 × 10 =
  8. Double 34 =
  9. Half of 26 =
  10. 32 + 9 =
  11. 32 × 10 =
  12. 98 × 10 =
  13. 100 − 38 =
  14. Double 24 =
  15. 61 × 10 =
  16. 41 × 10 =
  17. 100 − 29 =
  18. 29 + 9 =
  19. 22 × 10 =
  20. 100 − 86 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 50
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 46 × 99 =
  2. 12 × 25 =
  3. 333 + 499 =
  4. 72 × 25 =
  5. 189 + 299 =
  6. 122 + 399 =
  7. 24 × 25 =
  8. 88 × 25 =
  9. 140 × 5 =
  10. 201 + 99 =
  11. 44 × 11 =
  12. 12 × 5 =
  13. 48 × 99 =
  14. 84 × 25 =
  15. 26 × 5 =
  16. 165 + 199 =

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.