Free · Class 1–5 · 3 worksheets · answer keys · practise online · set 36

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 36
Name:Date:Score:    / 20

Solve in your head.

  1. 14 − 2 =
  2. Double 7 =
  3. Double 2 =
  4. 8 + 2 =
  5. Double 6 =
  6. 70 + 8 =
  7. 80 + 6 =
  8. 60 + 3 =
  9. Double 4 =
  10. 8 + 5 =
  11. 80 + 7 =
  12. 3 + 5 =
  13. 40 + 3 =
  14. 6 + 10 =
  15. 12 − 9 =
  16. 9 + 7 =
  17. Double 9 =
  18. 80 + 1 =
  19. 10 + 9 =
  20. 6 + 9 =

Mental maths — Class 3

Class 3 · Worksheet 2 · set 36
Name:Date:Score:    / 20

Solve in your head.

  1. 100 − 83 =
  2. 78 × 10 =
  3. Double 35 =
  4. Half of 40 =
  5. Double 43 =
  6. Half of 90 =
  7. 100 − 67 =
  8. Half of 60 =
  9. Double 14 =
  10. 98 × 10 =
  11. 27 × 10 =
  12. Double 13 =
  13. Half of 56 =
  14. Half of 22 =
  15. 100 − 22 =
  16. 50 × 10 =
  17. 54 + 9 =
  18. 32 + 9 =
  19. 18 + 9 =
  20. 100 − 79 =

Mental maths — Class 4–5

Class 4–5 · Worksheet 3 · set 36
Name:Date:Score:    / 16

Solve in your head. Use the tricks.

  1. 122 × 5 =
  2. 36 × 25 =
  3. 228 + 299 =
  4. 60 × 25 =
  5. 282 + 99 =
  6. 64 × 5 =
  7. 80 × 25 =
  8. 48 × 25 =
  9. 40 × 25 =
  10. 475 + 99 =
  11. 68 × 99 =
  12. 287 + 399 =
  13. 336 + 499 =
  14. 99 × 99 =
  15. 106 × 5 =
  16. 98 × 5 =

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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.