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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 233 · 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. 1.5 + 8 + 3 =
  2. 2.9 + 10 =
  3. 3.2 + 1 + 7 =
  4. 4.Manav has 7 crayons and gets 10 crayons more. How many crayons does Manav have now?
  5. 5.3 + 1 + 14 =
  6. 6.There are 2 red beads and 15 pink beads. How many beads are there in all?
  7. 7.1 + 9 =
  8. 8.Gurpreet has 4 mangoes and gets 9 mangoes more. How many mangoes does Gurpreet have now?
  9. 9.2 + 5 + 13 =
  10. 10.5 + 7 =
  11. 11.5 + 3 + 10 =
  12. 12.Nisha has 8 kites and gets 9 kites more. How many kites does Nisha have now?
  13. 13.15 + 4 =
  14. 14.? + 9 = 10
  15. 15.There are 10 white balloons and 5 pink balloons. How many balloons are there in all?
  16. 16.Rahul has 8 flowers and gets 11 flowers more. How many flowers does Rahul have now?
  17. 17.8 + ? = 18
  18. 18.6 + 7 + 6 =
  19. 19.There are 3 pink balloons and 8 blue balloons. How many balloons are there in all?
  20. 20.There are 4 blue flowers and 15 pink flowers. How many flowers are there in all?
  21. 21.There are 11 white balls and 8 red balls. How many balls are there in all?
  22. 22.2 + 1 =
  23. 23.2 + ? = 8
  24. 24.Arjun has 10 books and gets 6 books more. How many books does Arjun have now?
  25. 25.Riya has 4 crayons and gets 15 crayons more. How many crayons does Riya have now?
  26. 26.Pooja has 3 balloons and gets 12 balloons more. How many balloons does Pooja have now?
  27. 27.2 + 7 =
  28. 28.7 + 2 + 9 =
  29. 29.8 + 1 + 6 =
  30. 30.There are 7 red flowers and 12 white flowers. How many flowers are there in all?
  31. 31.? + 1 = 4
  32. 32.Vivaan has 7 marbles and gets 10 marbles more. How many marbles does Vivaan have now?
  33. 33.Diya has 13 balls and gets 1 ball more. How many balls does Diya have now?
  34. 34.3 + 2 =
  35. 35.4 + ? = 13
  36. 36.7 + 2 =
  37. 37.2 + 18 =
  38. 38.There are 5 pink balloons and 5 red balloons. How many balloons are there in all?
  39. 39.8 + 4 =
  40. 40.19 + 1 =

Answer key

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

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