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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 86 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.14 + 3 =
  2. 2.6 + 11 =
  3. 3.? + 6 = 16
  4. 4.7 + 7 + 4 =
  5. 5.Pooja has 12 mangoes and gets 3 mangoes more. How many mangoes does Pooja have now?
  6. 6.19 + 1 =
  7. 7.Aditya has 9 mangoes and gets 6 mangoes more. How many mangoes does Aditya have now?
  8. 8.4 + 8 + 6 =
  9. 9.6 + ? = 13
  10. 10.Arjun has 13 bananas and gets 3 bananas more. How many bananas does Arjun have now?
  11. 11.3 + 2 + 4 =
  12. 12.? + 10 = 18
  13. 13.Riya has 12 bananas and gets 1 banana more. How many bananas does Riya have now?
  14. 14.Aarav has 4 pencils and gets 8 pencils more. How many pencils does Aarav have now?
  15. 15.10 + 9 =
  16. 16.5 + 7 + 8 =
  17. 17.Aarav has 4 balloons and gets 9 balloons more. How many balloons does Aarav have now?
  18. 18.Kabir has 3 bananas and gets 9 bananas more. How many bananas does Kabir have now?
  19. 19.6 + 4 + 10 =
  20. 20.Pooja has 11 pencils and gets 6 pencils more. How many pencils does Pooja have now?
  21. 21.There are 6 white flowers and 5 blue flowers. How many flowers are there in all?
  22. 22.Rahul has 13 balloons and gets 7 balloons more. How many balloons does Rahul have now?
  23. 23.5 + 6 =
  24. 24.9 + 11 =
  25. 25.1 + 1 + 9 =
  26. 26.18 + 2 =
  27. 27.1 + 5 + 9 =
  28. 28.Aarav has 7 shells and gets 10 shells more. How many shells does Aarav have now?
  29. 29.? + 4 = 16
  30. 30.4 + ? = 5
  31. 31.Vivaan has 5 shells and gets 5 shells more. How many shells does Vivaan have now?
  32. 32.There are 3 white beads and 12 pink beads. How many beads are there in all?
  33. 33.4 + 8 + 3 =
  34. 34.Dev has 11 kites and gets 8 kites more. How many kites does Dev have now?
  35. 35.4 + ? = 15
  36. 36.Riya has 15 balls and gets 1 ball more. How many balls does Riya have now?
  37. 37.Zoya has 14 balloons and gets 1 balloon more. How many balloons does Zoya have now?
  38. 38.? + 2 = 3
  39. 39.13 + 6 =
  40. 40.Rohan has 13 balloons and gets 1 balloon more. How many balloons does Rohan have now?

Answer key

  1. 17
  2. 17
  3. 10
  4. 18
  5. 15
  6. 20
  7. 15
  8. 18
  9. 7
  10. 16
  11. 9
  12. 8
  13. 13
  14. 12
  15. 19
  16. 20
  17. 13
  18. 12
  19. 20
  20. 17
  21. 11
  22. 20
  23. 11
  24. 20
  25. 11
  26. 20
  27. 15
  28. 17
  29. 12
  30. 1
  31. 10
  32. 15
  33. 15
  34. 19
  35. 11
  36. 16
  37. 15
  38. 1
  39. 19
  40. 14

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