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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 850 · 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. 1.11 + 4 =
  2. 2.? + 4 = 14
  3. 3.Priya has 5 kites and gets 6 kites more. How many kites does Priya have now?
  4. 4.2 + 1 + 14 =
  5. 5.There are 3 pink balls and 17 blue balls. How many balls are there in all?
  6. 6.6 + 6 + 2 =
  7. 7.There are 12 pink beads and 2 green beads. How many beads are there in all?
  8. 8.4 + 3 + 10 =
  9. 9.5 + 8 + 1 =
  10. 10.12 + 3 =
  11. 11.6 + 6 + 1 =
  12. 12.3 + 2 =
  13. 13.3 + 5 =
  14. 14.5 + 1 =
  15. 15.There are 3 yellow balloons and 16 pink balloons. How many balloons are there in all?
  16. 16.There are 8 green kites and 9 pink kites. How many kites are there in all?
  17. 17.Lakshmi has 11 pencils and gets 8 pencils more. How many pencils does Lakshmi have now?
  18. 18.2 + ? = 5
  19. 19.14 + 2 =
  20. 20.8 + ? = 17
  21. 21.There are 7 yellow balloons and 9 green balloons. How many balloons are there in all?
  22. 22.Riya has 2 books and gets 2 books more. How many books does Riya have now?
  23. 23.Tara has 5 books and gets 5 books more. How many books does Tara have now?
  24. 24.Saanvi has 9 bananas and gets 2 bananas more. How many bananas does Saanvi have now?
  25. 25.5 + 15 =
  26. 26.? + 2 = 19
  27. 27.1 + 8 + 5 =
  28. 28.2 + 10 =
  29. 29.There are 6 yellow balloons and 11 red balloons. How many balloons are there in all?
  30. 30.5 + ? = 19
  31. 31.1 + ? = 8
  32. 32.Zoya has 4 pencils and gets 5 pencils more. How many pencils does Zoya have now?
  33. 33.5 + 4 + 5 =
  34. 34.? + 3 = 14
  35. 35.Isha has 7 kites and gets 8 kites more. How many kites does Isha have now?
  36. 36.2 + 6 + 1 =
  37. 37.12 + 4 =
  38. 38.7 + 3 + 3 =
  39. 39.There are 4 red flowers and 11 yellow flowers. How many flowers are there in all?
  40. 40.There are 9 white beads and 10 pink beads. How many beads are there in all?

Answer key

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

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