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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 506 · 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.Arjun has 3 mangoes and gets 1 mango more. How many mangoes does Arjun have now?
  2. 2.Lakshmi has 15 balls and gets 4 balls more. How many balls does Lakshmi have now?
  3. 3.10 + 5 =
  4. 4.Rohan has 4 balloons and gets 6 balloons more. How many balloons does Rohan have now?
  5. 5.Aditya has 6 balloons and gets 10 balloons more. How many balloons does Aditya have now?
  6. 6.13 + 7 =
  7. 7.Diya has 12 shells and gets 2 shells more. How many shells does Diya have now?
  8. 8.Dev has 13 marbles and gets 1 marble more. How many marbles does Dev have now?
  9. 9.Nisha has 12 flowers and gets 2 flowers more. How many flowers does Nisha have now?
  10. 10.3 + 2 + 4 =
  11. 11.5 + 4 + 11 =
  12. 12.8 + 5 + 5 =
  13. 13.There are 9 blue flowers and 8 pink flowers. How many flowers are there in all?
  14. 14.10 + 3 =
  15. 15.3 + 6 + 4 =
  16. 16.12 + ? = 17
  17. 17.8 + 5 + 6 =
  18. 18.4 + 4 + 5 =
  19. 19.7 + ? = 11
  20. 20.? + 2 = 3
  21. 21.2 + ? = 16
  22. 22.8 + 1 + 1 =
  23. 23.1 + 5 + 7 =
  24. 24.2 + 16 =
  25. 25.2 + 15 =
  26. 26.There are 8 yellow flowers and 7 white flowers. How many flowers are there in all?
  27. 27.There are 3 blue balloons and 6 green balloons. How many balloons are there in all?
  28. 28.Ananya has 9 kites and gets 3 kites more. How many kites does Ananya have now?
  29. 29.There are 6 white beads and 8 green beads. How many beads are there in all?
  30. 30.Arjun has 4 shells and gets 4 shells more. How many shells does Arjun have now?
  31. 31.3 + ? = 6
  32. 32.There are 2 pink balloons and 6 red balloons. How many balloons are there in all?
  33. 33.? + 4 = 5
  34. 34.19 + 1 =
  35. 35.6 + 7 + 4 =
  36. 36.3 + 1 + 10 =
  37. 37.There are 9 blue balls and 3 yellow balls. How many balls are there in all?
  38. 38.Zoya has 2 mangoes and gets 11 mangoes more. How many mangoes does Zoya have now?
  39. 39.? + 3 = 6
  40. 40.1 + 8 =

Answer key

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

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