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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 263 · 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. 1.7 + 4 + 1 =
  2. 2.4 + 13 =
  3. 3.Dev has 5 bananas and gets 1 banana more. How many bananas does Dev have now?
  4. 4.1 + 1 + 7 =
  5. 5.There are 2 pink beads and 3 white beads. How many beads are there in all?
  6. 6.? + 6 = 8
  7. 7.7 + 7 + 6 =
  8. 8.4 + 7 =
  9. 9.? + 1 = 11
  10. 10.6 + 1 + 2 =
  11. 11.13 + 4 =
  12. 12.Isha has 10 books and gets 10 books more. How many books does Isha have now?
  13. 13.There are 5 white kites and 2 red kites. How many kites are there in all?
  14. 14.Arjun has 10 mangoes and gets 2 mangoes more. How many mangoes does Arjun have now?
  15. 15.There are 3 blue beads and 13 pink beads. How many beads are there in all?
  16. 16.There are 3 pink beads and 4 white beads. How many beads are there in all?
  17. 17.4 + 1 + 2 =
  18. 18.17 + 2 =
  19. 19.3 + 17 =
  20. 20.2 + ? = 14
  21. 21.There are 4 yellow flowers and 4 red flowers. How many flowers are there in all?
  22. 22.5 + 11 =
  23. 23.Nisha has 5 kites and gets 10 kites more. How many kites does Nisha have now?
  24. 24.? + 4 = 5
  25. 25.5 + 1 =
  26. 26.3 + ? = 4
  27. 27.Karan has 4 flowers and gets 16 flowers more. How many flowers does Karan have now?
  28. 28.? + 3 = 4
  29. 29.Diya has 6 marbles and gets 11 marbles more. How many marbles does Diya have now?
  30. 30.There are 12 white kites and 2 yellow kites. How many kites are there in all?
  31. 31.There are 7 pink kites and 4 red kites. How many kites are there in all?
  32. 32.1 + 3 + 3 =
  33. 33.3 + 1 + 5 =
  34. 34.3 + ? = 11
  35. 35.There are 10 white balls and 10 green balls. How many balls are there in all?
  36. 36.4 + 9 =
  37. 37.7 + 6 + 7 =
  38. 38.Nisha has 9 marbles and gets 6 marbles more. How many marbles does Nisha have now?
  39. 39.2 + ? = 3
  40. 40.? + 2 = 5

Answer key

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

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