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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 195 · 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 + 1 =
  2. 2.1 + 1 + 2 =
  3. 3.Zoya has 9 crayons and gets 2 crayons more. How many crayons does Zoya have now?
  4. 4.There are 6 yellow balloons and 5 green balloons. How many balloons are there in all?
  5. 5.There are 6 blue crayons and 3 white crayons. How many crayons are there in all?
  6. 6.9 + ? = 20
  7. 7.18 + 1 =
  8. 8.Dev has 3 balls and gets 6 balls more. How many balls does Dev have now?
  9. 9.There are 7 pink flowers and 2 red flowers. How many flowers are there in all?
  10. 10.There are 2 green crayons and 5 blue crayons. How many crayons are there in all?
  11. 11.5 + 5 + 8 =
  12. 12.? + 2 = 5
  13. 13.Lakshmi has 10 pencils and gets 4 pencils more. How many pencils does Lakshmi have now?
  14. 14.There are 7 white crayons and 11 pink crayons. How many crayons are there in all?
  15. 15.9 + 1 =
  16. 16.Kabir has 6 pencils and gets 12 pencils more. How many pencils does Kabir have now?
  17. 17.There are 6 red balloons and 6 green balloons. How many balloons are there in all?
  18. 18.3 + ? = 10
  19. 19.3 + ? = 5
  20. 20.Saanvi has 6 marbles and gets 8 marbles more. How many marbles does Saanvi have now?
  21. 21.15 + 5 =
  22. 22.Kavya has 7 mangoes and gets 11 mangoes more. How many mangoes does Kavya have now?
  23. 23.Isha has 2 mangoes and gets 16 mangoes more. How many mangoes does Isha have now?
  24. 24.8 + 10 =
  25. 25.Priya has 2 pencils and gets 12 pencils more. How many pencils does Priya have now?
  26. 26.There are 2 white flowers and 18 blue flowers. How many flowers are there in all?
  27. 27.5 + 6 + 5 =
  28. 28.Gurpreet has 4 balloons and gets 9 balloons more. How many balloons does Gurpreet have now?
  29. 29.12 + ? = 13
  30. 30.12 + 6 =
  31. 31.There are 4 red balloons and 4 blue balloons. How many balloons are there in all?
  32. 32.7 + 3 + 3 =
  33. 33.3 + ? = 6
  34. 34.2 + ? = 5
  35. 35.There are 7 pink beads and 11 white beads. How many beads are there in all?
  36. 36.8 + 5 =
  37. 37.Riya has 15 mangoes and gets 5 mangoes more. How many mangoes does Riya have now?
  38. 38.There are 4 red balls and 4 yellow balls. How many balls are there in all?
  39. 39.6 + 5 =
  40. 40.3 + 1 + 1 =

Answer key

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

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