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Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 81

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 81
Name:Date:Score:    / 20

Solve in your head.

  1. 12 − 8 =
  2. Double 4 =
  3. 10 + 6 =
  4. 60 + 4 =
  5. 60 + 2 =
  6. Double 7 =
  7. 4 + 8 =
  8. 40 + 2 =
  9. 90 + 7 =
  10. 16 − 1 =
  11. 30 + 9 =
  12. Double 8 =
  13. 15 − 11 =
  14. 2 + 8 =
  15. 11 − 1 =
  16. 70 + 7 =
  17. Double 9 =
  18. Double 5 =
  19. Double 6 =
  20. 6 + 7 =

Mental maths — Class 3

Class 3 · Worksheet 2 · set 81
Name:Date:Score:    / 20

Solve in your head.

  1. Half of 90 =
  2. 100 − 41 =
  3. 28 × 10 =
  4. 100 − 50 =
  5. 92 × 10 =
  6. 60 + 9 =
  7. Double 39 =
  8. 74 + 9 =
  9. 100 − 87 =
  10. 100 − 47 =
  11. Double 18 =
  12. 35 + 9 =
  13. 18 + 9 =
  14. Double 34 =
  15. Double 47 =
  16. 100 − 46 =
  17. 100 − 23 =
  18. 73 × 10 =
  19. 93 × 10 =
  20. 37 × 10 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 81
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 198 + 199 =
  2. 92 × 11 =
  3. 30 × 11 =
  4. 322 + 99 =
  5. 77 × 99 =
  6. 55 × 99 =
  7. 60 × 5 =
  8. 50 × 5 =
  9. 8 × 25 =
  10. 22 × 5 =
  11. 60 × 99 =
  12. 80 × 5 =
  13. 72 × 25 =
  14. 144 × 5 =
  15. 146 × 5 =
  16. 36 × 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.