Printable Math Worksheet for 8-Year-Olds – Numbers to 20, Addition, Subtraction & Number Bonds

Instructions

1. Read the directions for each section carefully.
2. Write your answers clearly in the spaces provided.
3. Use the number lines and pictures to help you solve the problems.
4. Try your best and have fun with numbers!

Section 1: Number Detective

Fill in the missing number in each sequence.

1. 11, 12, ____, 14, 15

2. 18, 17, ____, 15, 14

3. 8, 10, 12, ____, 16

4. 19, ____, 17, 16

5. 10, 11, 12, ____, 14

Section 2: Numbers and Words

Fill in the missing digit or word.

1. 12 -> ____

2. ____ -> fifteen

3. 18 -> ____

4. ____ -> eleven

5. 19 -> ____

6. ____ -> seventeen

7. 20 -> ____

8. ____ -> fourteen

Section 3: Count the Objects

Count the number of shapes in each box and write the total.

1. How many stars? ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★

   Answer: ____

2. How many circles? O O O O O O O O O O O O O O O

   Answer: ____

3. How many triangles? â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–²

   Answer: ____

4. How many hearts? ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥

   Answer: ____

5. How many squares? â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â– 

   Answer: ____

Section 4: Addition on the Number Line

Use the number line to solve the addition problems. Start at the first number and jump forward.

1. 7 + 6 = __

   |<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

2. 9 + 5 = __

   |<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

3. 11 + 8 = __

   |<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

4. 14 + 4 = __

   |<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

5. 6 + 13 = __

   |<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

Section 5: Subtraction by Crossing Out

Cross out the correct number of shapes to find the answer.

1. 15 - 4 = __

   O O O O O O O O O O O O O O O

2. 12 - 7 = __

   ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★

3. 18 - 5 = __

   â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–² â–²

4. 11 - 1 = __

   ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥

5. 19 - 8 = __

   â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â– 

Section 6: Comparing Numbers

Use the number line to find the difference between the two numbers.

|<--0--1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19--20-->|

1. Compare 16 and 11. How many more is 16 than 11?

   Answer: ____

2. Compare 19 and 15. What is the difference?

   Answer: ____

3. Compare 14 and 8. How many steps are between 8 and 14?

   Answer: ____

Section 7: Break It Down! Tens and Ones

Break each number into tens and ones. Fill in the empty bubbles and blanks.

1. The number is 16.

   ( 16 )
   /    \

   ( ) ( )

   This is __ ten and __ ones.

2. The number is 19.

   ( 19 )
   /    \

   ( ) ( )

   This is __ ten and __ ones.

3. The number is 13.

   ( 13 )
   /    \

   ( ) ( )

   This is __ ten and __ ones.

4. The number is 11.

   ( 11 )
   /    \

   ( ) ( )

   This is __ ten and __ ones.

Answer Key

Section 1: Number Detective

1. 13
2. 16
3. 14
4. 18
5. 13

Section 2: Numbers and Words

1. twelve
2. 15
3. eighteen
4. 11
5. nineteen
6. 17
7. twenty
8. 14

Section 3: Count the Objects

1. 12
2. 15
3. 17
4. 11
5. 20

Section 4: Addition on the Number Line

1. 13
2. 14
3. 19
4. 18
5. 19

Section 5: Subtraction by Crossing Out

1. 11 (student should cross out 4 circles)
2. 5 (student should cross out 7 stars)
3. 13 (student should cross out 5 triangles)
4. 10 (student should cross out 1 heart)
5. 11 (student should cross out 8 squares)

Section 6: Comparing Numbers

1. 5
2. 4
3. 6

Section 7: Break It Down! Tens and Ones

1. Bubbles: (10) and (6). Blanks: 1 ten and 6 ones.
2. Bubbles: (10) and (9). Blanks: 1 ten and 9 ones.
3. Bubbles: (10) and (3). Blanks: 1 ten and 3 ones.
4. Bubbles: (10) and (1). Blanks: 1 ten and 1 one.