Subtraction Within 10: math practice, Grade 1 – download the PDF

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7 October 20267 October 2026

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Math practice Grade 1 : Subtraction Within 10 — Zyro the alien explorer of Planète Maths

20 problems graded by difficulty (★ easy, ★★ medium, ★★★ hard). Try first, without looking at the solutions!

1 Cross out and count ★★★

There were 6 stickers on a page. Some were used, and they are crossed out in the picture.

a) How many stickers were used?
b) How many stickers are left?
c) Write the subtraction sentence.

2 Complete the facts ★★★

Find each answer.

a) \( 5 - 1 = \square \)
b) \( 8 - 0 = \square \)
c) \( 9 - 9 = \square \)
d) \( 7 - 2 = \square \)
e) \( 10 - 4 = \square \)

3 Birds on a fence ★★★

Eight birds sit on a fence. Three birds fly away. How many birds are still on the fence? Draw circles and cross some out, then write a subtraction sentence.

4 Match the picture ★★★

Look at the picture of nine counters.

Which sentence matches the picture: \( 5 + 4 = 9 \), \( 9 - 4 = 5 \) or \( 4 - 9 = 5 \)? Explain.

5 Hop back on the number line ★★★

Start at 7 and hop back 3 times.

a) Where do you land?
b) Write the subtraction sentence.

6 Marbles in a bag ★★★

A bag has 8 marbles. 3 marbles are red and the others are blue.

How many marbles are blue?

7 True or false? ★★★

Say if each sentence is true or false. If it is false, give the correct answer.

a) \( 6 - 2 = 4 \)
b) \( 5 - 5 = 1 \)
c) \( 9 - 1 = 8 \)
d) \( 4 - 3 = 2 \)

8 Cookies on a plate ★★★

Mia baked 10 cookies. She and her friends ate 4 of them. How many cookies are left? Write a subtraction sentence and a full answer.

9 Plus or minus? ★★★

Write + or − in each box to make the sentence true.

a) \( 7 \;\square\; 2 = 5 \)
b) \( 4 \;\square\; 3 = 7 \)
c) \( 9 \;\square\; 6 = 3 \)
d) \( 2 \;\square\; 8 = 10 \)

10 A fact family ★★★

Use the triangle to write the four facts of the fact family.

Write two addition facts and two subtraction facts.

11 Let addition help ★★★

Use an addition fact to solve each subtraction.

a) \( 10 - 7 \) (think \( 7 + \square = 10 \))
b) \( 8 - 5 \) (think \( 5 + \square = 8 \))
c) \( 6 - 4 \) (think \( 4 + \square = 6 \))

12 On the playground ★★★

Nine children are playing outside. Six children go inside for a snack. How many children are still outside? Write the subtraction sentence.

13 Find the hidden number ★★★

Find the number that is hidden in each box.

a) \( 8 - \square = 2 \)
b) \( \square - 4 = 3 \)
c) \( 10 - \square = 10 \)

14 Who has more left? ★★★

Leo has 9 crayons and gives away 5. Ana has 7 crayons and gives away 2. Who has more crayons left? Show your work.

15 How many at the start? ★★★

Sam had some toy cars. He gave 4 cars to his sister. Now Sam has 5 cars. How many cars did Sam have at the start? Write a subtraction sentence with a box and solve it.