Counting by 2s to 20 Worksheet

Question 1

Write the numbers when you count by 2s from 2 to 20.

Accepted Answer

The numbers are 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.

Question 2

Fill in the missing number: 2, 4, __, 8, 10.

Accepted Answer

The missing number is 6 because counting by 2s goes 2, 4, 6, 8, 10.

Question 3

Fill in the missing number: 10, 12, __, 16, 18.

Accepted Answer

The missing number is 14 because 14 comes after 12 when counting by 2s.

Question 4

There are 2 shoes in each pair. Count by 2s to find how many shoes are in 5 pairs.

Accepted Answer

There are 10 shoes in 5 pairs because 2, 4, 6, 8, 10 counts five pairs.

Question 5

Circle the numbers you say when you count by 2s: 1, 2, 3, 4, 5, 6, 7, 8.

Accepted Answer

The numbers to circle are 2, 4, 6, and 8 because they are counting by 2s numbers.

Question 6

Fill in the missing numbers: 2, __, 6, __, 10.

Accepted Answer

The missing numbers are 4 and 8 because the counting pattern is 2, 4, 6, 8, 10.

Question 7

A bug has 2 antennae. Count by 2s to find how many antennae 4 bugs have.

Accepted Answer

Four bugs have 8 antennae because 2, 4, 6, 8 counts four groups of 2.

Question 8

What number comes next? 6, 8, 10, __.

Accepted Answer

The next number is 12 because 10 plus 2 is 12.

Question 9

What number comes before 18 when you count by 2s?

Accepted Answer

The number before 18 is 16 because counting by 2s goes 14, 16, 18.

Question 10

Count the dots by 2s. There are 6 pairs of dots. How many dots are there in all?

Accepted Answer

There are 12 dots in all because 2, 4, 6, 8, 10, 12 counts six pairs.

Question 11

Fill in the missing number: 12, 14, 16, __, 20.

Accepted Answer

The missing number is 18 because counting by 2s goes 12, 14, 16, 18, 20.

Question 12

Is 15 a number you say when counting by 2s from 2 to 20? Write yes or no and explain.

Accepted Answer

No, 15 is not a number you say when counting by 2s from 2 to 20 because the counting numbers are 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.

Question 13

There are 2 socks in each pair. How many socks are in 7 pairs?

Accepted Answer

There are 14 socks in 7 pairs because counting by 2s seven times gives 2, 4, 6, 8, 10, 12, 14.

Question 14

Write the next three numbers: 14, 16, __, __, __.

Accepted Answer

The next three numbers are 18, 20, and 22 because each number is 2 more than the number before it.

Question 15

A number line shows 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. If you hop by 2s from 0 to 20, how many hops do you make?

Accepted Answer

You make 10 hops because it takes ten jumps of 2 to go from 0 to 20.

Counting by 2s to 20