Math Worksheet for Students

Free worksheet covering Math. Created with Learning Corner's AI-powered tools.

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Instructions

  1. Complete each activity carefully.
  2. You may use counters, coins, blocks, or drawings to help you.
  3. For addition and subtraction, show your thinking when you can.
  4. Try the Challenge questions after completing the core activities.

Learning Goals

  • Count forward and backward within 20.
  • Find number pairs that make 20.
  • Add and subtract within 20.
  • Use mathematics in everyday situations.

1. Count and Complete

Fill in the missing numbers.

  1. 1, 2, 3, ___, 5, 6
  2. 7, 8, ___, 10, 11
  3. 12, , 14, 15,
  4. 20, 19, , 17,
  5. 16, 15, 14, ___, 12

2. Make 20

Write the number that is needed to make 20.

Example: 13 + ___ = 20, so the answer is 7.

  1. 5 + ___ = 20
  2. 9 + ___ = 20
  3. 14 + ___ = 20
  4. 18 + ___ = 20

3. Number-Pair Organizer

Write a number pair that makes 20. Use a different pair in each row.

First number Second number Total
10 10 20
20
20
20
20
20

4. Add Within 20

Solve each addition problem.

  1. 4 + 6 = ___
  2. 7 + 8 = ___
  3. 9 + 5 = ___
  4. 11 + 7 = ___
  5. 12 + 8 = ___

5. Subtract Within 20

Solve each subtraction problem.

  1. 20 − 5 = ___
  2. 17 − 8 = ___
  3. 19 − 6 = ___
  4. 15 − 7 = ___

6. Real-World Math Mission

Read each situation. Write an equation and solve the problem.

  1. A shelf has 12 books. A teacher adds 8 more books. How many books are on the shelf now?

Equation: __

Answer: ____

  1. A class has 20 crayons. Students use 9 crayons for an art project. How many crayons are left?

Equation: __

Answer: ____

Challenge Extension

Complete the following questions if you are ready for an extra challenge.

  • Find three different numbers that add to 20.

    + + ___ = 20

  • I am thinking of a number. It is greater than 10 and less than 20. When 5 is added to it, the answer is 20. What is my number?

    Answer: __

  • Draw 20 objects. Circle a group of 7. How many objects are not circled?

    Answer: __

Reflection

  • Which activity was easiest for you? __

  • Which activity helped you think the most? _____

  • Where might you use counting or making 20 in real life? ____

Answer Key

  1. 4
  2. 9
  3. 13 and 16
  4. 13 and 18
  5. 13
  6. 15
  7. 11
  8. 6
  9. 2
  10. 10
  11. 15
  12. 14
  13. 18
  14. 20
  15. 15
  16. 9
  17. 13
  18. 8
  19. Equation: 12 + 8 = 20. Answer: 20 books.
  20. Equation: 20 − 9 = 11. Answer: 11 crayons.

Challenge Extension:

  • Answers may vary. Example: 5 + 6 + 9 = 20.
  • 15
  • 13 objects are not circled.
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