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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 261 · 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.Karan has 13 balloons and gets 1 balloon more. How many balloons does Karan have now?
  2. 2.3 + 8 + 7 =
  3. 3.Rohan has 14 balls and gets 3 balls more. How many balls does Rohan have now?
  4. 4.There are 12 blue kites and 6 green kites. How many kites are there in all?
  5. 5.Karan has 3 marbles and gets 10 marbles more. How many marbles does Karan have now?
  6. 6.2 + 3 + 9 =
  7. 7.Sneha has 5 books and gets 13 books more. How many books does Sneha have now?
  8. 8.? + 1 = 4
  9. 9.Vivaan has 6 flowers and gets 9 flowers more. How many flowers does Vivaan have now?
  10. 10.4 + 5 =
  11. 11.3 + ? = 4
  12. 12.Sneha has 5 mangoes and gets 1 mango more. How many mangoes does Sneha have now?
  13. 13.5 + 1 + 12 =
  14. 14.There are 12 blue balloons and 2 pink balloons. How many balloons are there in all?
  15. 15.There are 3 red flowers and 11 blue flowers. How many flowers are there in all?
  16. 16.3 + 6 =
  17. 17.There are 6 pink kites and 6 red kites. How many kites are there in all?
  18. 18.? + 4 = 5
  19. 19.6 + 4 + 2 =
  20. 20.There are 8 blue kites and 8 pink kites. How many kites are there in all?
  21. 21.5 + 7 + 6 =
  22. 22.4 + ? = 8
  23. 23.8 + ? = 13
  24. 24.Diya has 10 flowers and gets 2 flowers more. How many flowers does Diya have now?
  25. 25.Arjun has 4 mangoes and gets 3 mangoes more. How many mangoes does Arjun have now?
  26. 26.6 + 8 + 4 =
  27. 27.3 + 2 + 4 =
  28. 28.1 + 16 =
  29. 29.There are 2 pink balloons and 6 blue balloons. How many balloons are there in all?
  30. 30.Tara has 10 marbles and gets 7 marbles more. How many marbles does Tara have now?
  31. 31.Kabir has 8 shells and gets 7 shells more. How many shells does Kabir have now?
  32. 32.There are 8 white flowers and 10 yellow flowers. How many flowers are there in all?
  33. 33.There are 3 white kites and 3 pink kites. How many kites are there in all?
  34. 34.13 + 6 =
  35. 35.Saanvi has 15 books and gets 4 books more. How many books does Saanvi have now?
  36. 36.? + 6 = 7
  37. 37.13 + 4 =
  38. 38.There are 9 green kites and 9 red kites. How many kites are there in all?
  39. 39.? + 3 = 9
  40. 40.5 + 1 + 6 =

Answer key

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

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