Subtraction Examples in Math

Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Subtraction.

This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Math.

Concept Recap

Finding the difference between two numbers by removing one quantity from another, or measuring the gap between them.

If you have 5 cookies and eat 2, how many are left? You take away to find out.

Read the full concept explanation β†’

How to Use These Examples

  • Read the first worked example with the solution open so the structure is clear.
  • Try the practice problems before revealing each solution.
  • Use the related concepts and background knowledge badges if you feel stuck.

What to Focus On

Core idea: Subtraction is the inverse of additionβ€”undoing a combination.

Common stuck point: Borrowing (regrouping) in multi-digit subtraction: borrow from the next column when a digit is too small.

Sense of Study hint: Try counting up from the smaller number to the larger one to find how many steps apart they are.

Worked Examples

Example 1

easy
There are 7 cookies on a plate. You eat 3 cookies. How many cookies are left? Use \(a - b = c\).

Solution

  1. 1
    Write the subtraction sentence: \(7 - 3 = ?\)
  2. 2
    Start at 7 and count back 3: 6, 5, 4.
  3. 3
    So \(7 - 3 = 4\).

Answer

4 cookies
Subtraction means taking away from a group to find what remains. We start with 7 and remove 3 to get 4.

Example 2

medium
A jar has 12 marbles. A child takes out 5 marbles. How many marbles remain in the jar?

Practice Problems

Try these problems on your own first, then open the solution to compare your method.

Example 1

easy
What is \(9 - 4\)?

Example 2

medium
There are 15 birds on a fence. 6 birds fly away. How many birds are still on the fence?

Background Knowledge

These ideas may be useful before you work through the harder examples.

countingaddition