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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 948 · 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 green flowers and 3 blue flowers. How many flowers are there in all?
  2. 2.? + 8 = 13
  3. 3.Isha has 9 mangoes and gets 9 mangoes more. How many mangoes does Isha have now?
  4. 4.11 + 9 =
  5. 5.11 + ? = 12
  6. 6.There are 12 white balloons and 6 green balloons. How many balloons are there in all?
  7. 7.7 + 5 + 2 =
  8. 8.1 + ? = 12
  9. 9.6 + 3 + 7 =
  10. 10.There are 8 blue balls and 8 yellow balls. How many balls are there in all?
  11. 11.Manav has 3 kites and gets 3 kites more. How many kites does Manav have now?
  12. 12.There are 9 pink balloons and 3 green balloons. How many balloons are there in all?
  13. 13.8 + 8 =
  14. 14.There are 6 yellow beads and 12 white beads. How many beads are there in all?
  15. 15.7 + 4 + 9 =
  16. 16.16 + 3 =
  17. 17.? + 1 = 3
  18. 18.6 + 4 + 4 =
  19. 19.Ananya has 11 balls and gets 9 balls more. How many balls does Ananya have now?
  20. 20.Manav has 7 mangoes and gets 2 mangoes more. How many mangoes does Manav have now?
  21. 21.3 + 3 + 8 =
  22. 22.Lakshmi has 8 balloons and gets 8 balloons more. How many balloons does Lakshmi have now?
  23. 23.Dev has 12 mangoes and gets 3 mangoes more. How many mangoes does Dev have now?
  24. 24.? + 6 = 10
  25. 25.There are 3 blue flowers and 17 yellow flowers. How many flowers are there in all?
  26. 26.4 + ? = 5
  27. 27.3 + 11 =
  28. 28.19 + 1 =
  29. 29.There are 8 yellow balloons and 3 red balloons. How many balloons are there in all?
  30. 30.6 + 1 + 6 =
  31. 31.Tara has 13 balls and gets 5 balls more. How many balls does Tara have now?
  32. 32.There are 9 red kites and 2 green kites. How many kites are there in all?
  33. 33.7 + 10 =
  34. 34.There are 10 yellow balls and 6 pink balls. How many balls are there in all?
  35. 35.6 + 8 + 6 =
  36. 36.There are 7 green kites and 7 yellow kites. How many kites are there in all?
  37. 37.? + 5 = 15
  38. 38.3 + 2 + 2 =
  39. 39.2 + 17 =
  40. 40.There are 3 pink balls and 8 blue balls. How many balls are there in all?

Answer key

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

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