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Math Grade K-1 Answer Key

Number Bonds to 5

Find the two parts that make 5

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Number Bonds to 5

Find the two parts that make 5

Math - Grade K-1

Instructions: Read each problem carefully. Use counters, fingers, or drawings if you need help. Write the missing number or number sentence.
  1. 1

    There are 5 apples. 2 apples are red and the rest are green. How many apples are green?

    Start at 2 and count up to 5.

    There are 3 green apples because 2 and 3 make 5.
  2. 2

    Fill in the missing part: 4 + __ = 5.

    The missing part is 1 because 4 plus 1 equals 5.
  3. 3

    A number bond has a whole of 5. One part is 3. What is the other part?

    Think about how many more you need to get to 5.

    The other part is 2 because 3 and 2 make 5.
  4. 4

    Write a number sentence for this number bond: whole 5, parts 1 and 4.

    A correct number sentence is 1 + 4 = 5.
  5. 5

    You have 5 blocks. 0 blocks are blue. How many blocks are not blue?

    If none are blue, all 5 are not blue.

    There are 5 blocks that are not blue because 0 and 5 make 5.
  6. 6

    Fill in the missing part: __ + 2 = 5.

    The missing part is 3 because 3 plus 2 equals 5.
  7. 7

    Look at the dots. There are 5 dots in all. 1 dot is shaded. How many dots are not shaded?

    Count the dots that are not shaded.

    There are 4 dots not shaded because 1 and 4 make 5.
  8. 8

    A number bond has a whole of 5. One part is 5. What is the other part?

    The other part is 0 because 5 and 0 make 5.
  9. 9

    Draw circles to show 2 and 3 making 5. Then write the number sentence.

    Draw 2 circles in one group and 3 circles in another group.

    The drawing should show 2 circles and 3 circles, and the number sentence is 2 + 3 = 5.
  10. 10

    Fill in the missing part: 1 + __ = 5.

    The missing part is 4 because 1 plus 4 equals 5.
  11. 11

    There are 5 fish. 3 fish are big and the rest are small. How many fish are small?

    Count on from 3 to 5.

    There are 2 small fish because 3 and 2 make 5.
  12. 12

    Write two parts that make 5. Use the parts 0 and 5.

    The two parts are 0 and 5 because 0 plus 5 equals 5.
  13. 13

    The whole is 5. One part is 2. Fill in the missing part in the number bond.

    You can use 5 fingers and put 2 down.

    The missing part is 3 because 2 and 3 make 5.
  14. 14

    Complete the number sentence: __ + 0 = 5.

    The missing number is 5 because 5 plus 0 equals 5.
  15. 15

    There are 5 stars. Color 4 stars yellow and leave the rest white. How many stars are white?

    After you color 4 stars, count how many are left.

    There is 1 white star because 4 and 1 make 5.
LivePhysics™.com Math - Grade K-1 - Answer Key