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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 445 · 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 red balls and 4 pink balls. How many balls are there in all?
  2. 2.? + 2 = 14
  3. 3.Diya has 7 flowers and gets 6 flowers more. How many flowers does Diya have now?
  4. 4.There are 6 pink kites and 9 blue kites. How many kites are there in all?
  5. 5.4 + 4 =
  6. 6.There are 3 pink balloons and 2 red balloons. How many balloons are there in all?
  7. 7.1 + 8 + 2 =
  8. 8.4 + 5 + 6 =
  9. 9.10 + 6 =
  10. 10.Ananya has 6 books and gets 2 books more. How many books does Ananya have now?
  11. 11.There are 12 pink balloons and 2 white balloons. How many balloons are there in all?
  12. 12.2 + 8 + 2 =
  13. 13.Meera has 4 kites and gets 1 kite more. How many kites does Meera have now?
  14. 14.4 + ? = 17
  15. 15.5 + 7 + 6 =
  16. 16.There are 11 blue balloons and 4 red balloons. How many balloons are there in all?
  17. 17.7 + 11 =
  18. 18.? + 2 = 8
  19. 19.Zoya has 2 shells and gets 17 shells more. How many shells does Zoya have now?
  20. 20.7 + 4 =
  21. 21.14 + 1 =
  22. 22.There are 9 red crayons and 3 green crayons. How many crayons are there in all?
  23. 23.4 + ? = 10
  24. 24.There are 6 white balloons and 6 green balloons. How many balloons are there in all?
  25. 25.6 + 10 =
  26. 26.Ishaan has 15 mangoes and gets 1 mango more. How many mangoes does Ishaan have now?
  27. 27.6 + 6 =
  28. 28.1 + ? = 11
  29. 29.18 + 1 =
  30. 30.3 + 1 + 11 =
  31. 31.There are 11 green balloons and 3 red balloons. How many balloons are there in all?
  32. 32.9 + 7 =
  33. 33.2 + ? = 6
  34. 34.Dev has 10 shells and gets 9 shells more. How many shells does Dev have now?
  35. 35.6 + 5 + 2 =
  36. 36.Arjun has 2 balloons and gets 3 balloons more. How many balloons does Arjun have now?
  37. 37.2 + 2 + 7 =
  38. 38.18 + 2 =
  39. 39.5 + 4 + 1 =
  40. 40.There are 7 blue flowers and 4 yellow flowers. How many flowers are there in all?

Answer key

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

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