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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 921 · 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. 1.14 + 2 =
  2. 2.2 + 7 + 10 =
  3. 3.3 + 5 =
  4. 4.9 + 4 =
  5. 5.There are 2 white balloons and 4 pink balloons. How many balloons are there in all?
  6. 6.There are 9 red balloons and 9 pink balloons. How many balloons are there in all?
  7. 7.5 + 12 =
  8. 8.11 + 4 =
  9. 9.Ananya has 3 kites and gets 7 kites more. How many kites does Ananya have now?
  10. 10.There are 5 green crayons and 3 white crayons. How many crayons are there in all?
  11. 11.3 + 14 =
  12. 12.? + 10 = 20
  13. 13.15 + 4 =
  14. 14.14 + 3 =
  15. 15.There are 9 red kites and 9 yellow kites. How many kites are there in all?
  16. 16.? + 3 = 10
  17. 17.There are 2 blue kites and 15 red kites. How many kites are there in all?
  18. 18.19 + 1 =
  19. 19.There are 6 white beads and 3 red beads. How many beads are there in all?
  20. 20.1 + 7 + 2 =
  21. 21.? + 7 = 8
  22. 22.6 + 1 + 11 =
  23. 23.There are 11 pink beads and 6 red beads. How many beads are there in all?
  24. 24.Saanvi has 11 balloons and gets 4 balloons more. How many balloons does Saanvi have now?
  25. 25.Saanvi has 11 bananas and gets 2 bananas more. How many bananas does Saanvi have now?
  26. 26.There are 10 white flowers and 4 red flowers. How many flowers are there in all?
  27. 27.Aditya has 14 mangoes and gets 2 mangoes more. How many mangoes does Aditya have now?
  28. 28.Riya has 7 kites and gets 6 kites more. How many kites does Riya have now?
  29. 29.3 + 3 + 14 =
  30. 30.Dev has 2 flowers and gets 2 flowers more. How many flowers does Dev have now?
  31. 31.6 + 7 + 6 =
  32. 32.There are 10 red kites and 7 blue kites. How many kites are there in all?
  33. 33.? + 11 = 15
  34. 34.There are 9 green kites and 3 yellow kites. How many kites are there in all?
  35. 35.1 + 1 + 18 =
  36. 36.? + 1 = 3
  37. 37.3 + ? = 17
  38. 38.Karan has 10 shells and gets 7 shells more. How many shells does Karan have now?
  39. 39.5 + 13 =
  40. 40.There are 6 green balls and 6 yellow balls. How many balls are there in all?

Answer key

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

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