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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 589 · 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. 1.1 + ? = 19
  2. 2.3 + 1 =
  3. 3.5 + 4 =
  4. 4.Zoya has 13 books and gets 4 books more. How many books does Zoya have now?
  5. 5.15 + 2 =
  6. 6.There are 5 pink beads and 8 white beads. How many beads are there in all?
  7. 7.There are 9 yellow balloons and 5 blue balloons. How many balloons are there in all?
  8. 8.2 + ? = 11
  9. 9.11 + 2 =
  10. 10.Kavya has 11 bananas and gets 1 banana more. How many bananas does Kavya have now?
  11. 11.There are 3 blue balloons and 4 pink balloons. How many balloons are there in all?
  12. 12.3 + ? = 7
  13. 13.2 + 17 =
  14. 14.3 + 5 + 2 =
  15. 15.19 + 1 =
  16. 16.There are 5 green flowers and 14 yellow flowers. How many flowers are there in all?
  17. 17.There are 3 green kites and 5 blue kites. How many kites are there in all?
  18. 18.3 + 3 =
  19. 19.There are 6 blue crayons and 7 red crayons. How many crayons are there in all?
  20. 20.1 + 2 + 5 =
  21. 21.There are 5 red crayons and 6 pink crayons. How many crayons are there in all?
  22. 22.2 + 4 + 7 =
  23. 23.There are 4 yellow beads and 9 blue beads. How many beads are there in all?
  24. 24.? + 2 = 15
  25. 25.8 + 6 =
  26. 26.There are 2 yellow crayons and 16 blue crayons. How many crayons are there in all?
  27. 27.2 + ? = 3
  28. 28.Karan has 9 mangoes and gets 4 mangoes more. How many mangoes does Karan have now?
  29. 29.1 + ? = 3
  30. 30.4 + ? = 12
  31. 31.? + 4 = 7
  32. 32.4 + 1 =
  33. 33.There are 10 white flowers and 3 green flowers. How many flowers are there in all?
  34. 34.Arjun has 5 balloons and gets 15 balloons more. How many balloons does Arjun have now?
  35. 35.? + 9 = 20
  36. 36.8 + 5 + 3 =
  37. 37.Isha has 15 balls and gets 1 ball more. How many balls does Isha have now?
  38. 38.5 + 6 =
  39. 39.There are 3 red kites and 8 green kites. How many kites are there in all?
  40. 40.? + 4 = 6

Answer key

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

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