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Math Grade K-1 Answer Key

Zero: The Empty Number

Counting, writing, and understanding 0

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Zero: The Empty Number

Counting, writing, and understanding 0

Math - Grade K-1

Instructions: Read each problem carefully. Count what you see. Write your answer on the line.
  1. 1

    Look at the empty basket. How many apples are in the basket?

    Empty means there are none.

    There are 0 apples in the basket because the basket is empty.
  2. 2

    Trace the number 0 three times, then write it one time by yourself.

    The student should trace 0 three times and write 0 one time independently.
  3. 3

    There are 3 ducks in a pond. All 3 ducks fly away. How many ducks are left in the pond?

    If all of them leave, none are left.

    There are 0 ducks left in the pond because all 3 ducks flew away.
  4. 4

    Circle the group that shows zero stars: a group with 4 stars, a group with 0 stars, or a group with 2 stars.

    The group with 0 stars should be circled because it has no stars.
  5. 5

    Write the number that means none.

    Think about an empty box.

    The number that means none is 0.
  6. 6

    Sam has 0 cookies. Mia gives Sam 2 cookies. How many cookies does Sam have now?

    Sam has 2 cookies now because 0 plus 2 equals 2.
  7. 7

    Fill in the blank: 5, 4, 3, 2, 1, __.

    Count backward from 5.

    The missing number is 0 because counting down from 1 comes to 0.
  8. 8

    There are no fish in the bowl. Write the number that tells how many fish are in the bowl.

    There are 0 fish in the bowl because the bowl has no fish.
  9. 9

    Which number is less: 0 or 3?

    A group with nothing has less than a group with three things.

    0 is less than 3 because zero means none and 3 means three things.
  10. 10

    Draw 0 balloons in the box.

    Do not draw any balloons.

    The box should be empty because drawing 0 balloons means drawing no balloons.
  11. 11

    Lena has 4 blocks. She gives away 0 blocks. How many blocks does Lena have now?

    Lena still has 4 blocks because giving away 0 blocks means she gave away none.
  12. 12

    Count the cars in the parking lot. Write the number.

    There are 0 cars in the parking lot because the parking lot is empty.
  13. 13

    Fill in the blank: 0 + 1 = __.

    Start with no objects, then add one object.

    0 plus 1 equals 1 because starting with none and adding 1 makes 1.
  14. 14

    Put these numbers in order from smallest to largest: 2, 0, 1.

    Zero comes before one when counting up.

    The numbers in order from smallest to largest are 0, 1, 2.
  15. 15

    A plate has 1 sandwich. The sandwich is eaten. How many sandwiches are on the plate now?

    There are 0 sandwiches on the plate now because the sandwich was eaten.
LivePhysics™.com Math - Grade K-1 - Answer Key