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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 568 · 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 + 4 + 14 =
  2. 2.2 + ? = 4
  3. 3.5 + 5 + 7 =
  4. 4.8 + 1 =
  5. 5.Dev has 11 kites and gets 9 kites more. How many kites does Dev have now?
  6. 6.12 + 5 =
  7. 7.Lakshmi has 13 balls and gets 7 balls more. How many balls does Lakshmi have now?
  8. 8.There are 5 blue flowers and 8 green flowers. How many flowers are there in all?
  9. 9.Diya has 7 bananas and gets 11 bananas more. How many bananas does Diya have now?
  10. 10.There are 5 white balloons and 4 blue balloons. How many balloons are there in all?
  11. 11.6 + 4 =
  12. 12.Rahul has 8 flowers and gets 7 flowers more. How many flowers does Rahul have now?
  13. 13.4 + 8 + 4 =
  14. 14.? + 9 = 20
  15. 15.? + 1 = 3
  16. 16.There are 3 blue balloons and 6 pink balloons. How many balloons are there in all?
  17. 17.Diya has 13 pencils and gets 6 pencils more. How many pencils does Diya have now?
  18. 18.3 + 5 + 4 =
  19. 19.There are 11 red flowers and 2 yellow flowers. How many flowers are there in all?
  20. 20.? + 2 = 8
  21. 21.1 + ? = 5
  22. 22.5 + 5 =
  23. 23.2 + 4 + 5 =
  24. 24.5 + 8 + 5 =
  25. 25.11 + 2 =
  26. 26.There are 7 blue balloons and 7 red balloons. How many balloons are there in all?
  27. 27.9 + 10 =
  28. 28.19 + 1 =
  29. 29.4 + 4 + 4 =
  30. 30.Pooja has 2 books and gets 16 books more. How many books does Pooja have now?
  31. 31.7 + 2 + 3 =
  32. 32.15 + 1 =
  33. 33.Karan has 15 bananas and gets 3 bananas more. How many bananas does Karan have now?
  34. 34.Priya has 8 pencils and gets 3 pencils more. How many pencils does Priya have now?
  35. 35.15 + 4 =
  36. 36.There are 8 green crayons and 12 pink crayons. How many crayons are there in all?
  37. 37.Aarav has 10 pencils and gets 3 pencils more. How many pencils does Aarav have now?
  38. 38.3 + 3 + 3 =
  39. 39.Priya has 12 bananas and gets 1 banana more. How many bananas does Priya have now?
  40. 40.? + 4 = 10

Answer key

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

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