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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 217 · 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.There are 10 pink flowers and 3 blue flowers. How many flowers are there in all?
  2. 2.Vivaan has 5 marbles and gets 13 marbles more. How many marbles does Vivaan have now?
  3. 3.There are 3 red crayons and 3 pink crayons. How many crayons are there in all?
  4. 4.? + 2 = 7
  5. 5.Riya has 10 books and gets 4 books more. How many books does Riya have now?
  6. 6.5 + 10 =
  7. 7.3 + ? = 19
  8. 8.Saanvi has 5 mangoes and gets 9 mangoes more. How many mangoes does Saanvi have now?
  9. 9.19 + 1 =
  10. 10.10 + 7 =
  11. 11.4 + ? = 6
  12. 12.Kavya has 7 balloons and gets 4 balloons more. How many balloons does Kavya have now?
  13. 13.There are 10 yellow kites and 5 green kites. How many kites are there in all?
  14. 14.There are 11 white flowers and 2 pink flowers. How many flowers are there in all?
  15. 15.4 + ? = 5
  16. 16.1 + 6 =
  17. 17.5 + 11 =
  18. 18.Arjun has 9 balls and gets 9 balls more. How many balls does Arjun have now?
  19. 19.2 + ? = 12
  20. 20.10 + ? = 19
  21. 21.7 + 1 + 5 =
  22. 22.4 + ? = 11
  23. 23.? + 12 = 18
  24. 24.1 + 1 + 14 =
  25. 25.2 + 3 + 1 =
  26. 26.? + 9 = 15
  27. 27.Isha has 14 mangoes and gets 1 mango more. How many mangoes does Isha have now?
  28. 28.Tara has 10 flowers and gets 9 flowers more. How many flowers does Tara have now?
  29. 29.4 + ? = 13
  30. 30.There are 2 yellow balloons and 12 blue balloons. How many balloons are there in all?
  31. 31.6 + 6 + 2 =
  32. 32.There are 5 red flowers and 3 pink flowers. How many flowers are there in all?
  33. 33.Aditya has 15 mangoes and gets 5 mangoes more. How many mangoes does Aditya have now?
  34. 34.12 + ? = 17
  35. 35.13 + 3 =
  36. 36.4 + 2 + 10 =
  37. 37.There are 2 green flowers and 3 yellow flowers. How many flowers are there in all?
  38. 38.4 + 1 + 11 =
  39. 39.6 + 8 =
  40. 40.18 + 1 =

Answer key

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

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