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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 41 · 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.There are 7 pink kites and 10 white kites. How many kites are there in all?
  2. 2.? + 4 = 12
  3. 3.2 + 3 + 15 =
  4. 4.Priya has 8 bananas and gets 4 bananas more. How many bananas does Priya have now?
  5. 5.? + 1 = 8
  6. 6.Isha has 7 balloons and gets 13 balloons more. How many balloons does Isha have now?
  7. 7.16 + 3 =
  8. 8.There are 9 yellow crayons and 8 green crayons. How many crayons are there in all?
  9. 9.There are 10 pink flowers and 6 blue flowers. How many flowers are there in all?
  10. 10.17 + 2 =
  11. 11.3 + 17 =
  12. 12.There are 7 blue crayons and 8 white crayons. How many crayons are there in all?
  13. 13.7 + 1 + 5 =
  14. 14.Ananya has 5 mangoes and gets 2 mangoes more. How many mangoes does Ananya have now?
  15. 15.2 + ? = 20
  16. 16.Arjun has 3 pencils and gets 1 pencil more. How many pencils does Arjun have now?
  17. 17.Riya has 5 kites and gets 2 kites more. How many kites does Riya have now?
  18. 18.9 + 8 =
  19. 19.There are 8 white kites and 7 pink kites. How many kites are there in all?
  20. 20.18 + 1 =
  21. 21.? + 2 = 6
  22. 22.There are 4 yellow flowers and 7 red flowers. How many flowers are there in all?
  23. 23.1 + ? = 14
  24. 24.There are 7 pink kites and 12 red kites. How many kites are there in all?
  25. 25.? + 9 = 11
  26. 26.2 + ? = 3
  27. 27.19 + 1 =
  28. 28.Arjun has 14 mangoes and gets 4 mangoes more. How many mangoes does Arjun have now?
  29. 29.4 + 13 =
  30. 30.Isha has 7 mangoes and gets 7 mangoes more. How many mangoes does Isha have now?
  31. 31.2 + ? = 6
  32. 32.8 + 2 + 7 =
  33. 33.? + 2 = 8
  34. 34.? + 14 = 15
  35. 35.1 + 5 + 13 =
  36. 36.2 + 8 + 10 =
  37. 37.1 + ? = 8
  38. 38.There are 8 red crayons and 11 green crayons. How many crayons are there in all?
  39. 39.Manav has 5 balloons and gets 7 balloons more. How many balloons does Manav have now?
  40. 40.2 + 1 + 1 =

Answer key

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

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