Subtraction

Front

What is subtraction?

Back

Subtraction is a mathematical operation that represents the process of taking one number away from another. It is often referred to as 'finding the difference' between two numbers.

Front

What is the result of a subtraction called?

Back

The result of a subtraction operation is called the 'difference.'

Front

If you have 10 apples and you give away 3, how many apples do you have left?

Back

7 apples.

Tags

CCSS.1.OA.A.1

Front

What is the subtraction sentence for the problem: 'There are 15 birds on a tree, 5 fly away.'?

Back

15 - 5 = 10.

Tags

CCSS.2.OA.C.3

Front

How do you check your subtraction answer?

Back

You can check your subtraction answer by adding the difference to the number you subtracted from. If the sum equals the original number, your subtraction is correct.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is a common mistake when subtracting?

Back

A common mistake is borrowing incorrectly when dealing with larger numbers, which can lead to an incorrect difference.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

If a book has 120 pages and you read 45 pages, how many pages are left to read?

Back

75 pages.

Tags

CCSS.2.OA.A.1

Front

What is the term for subtracting a larger number from a smaller number?

Back

This is called 'negative subtraction' or it results in a negative number.

Tags

CCSS.7.NS.A.1C

Front

In the problem 'Emily's hair was 11 inches long. If she cut off 4 inches, how long is her hair now?', what is the subtraction sentence?

Back

11 - 4 = 7.

Tags

CCSS.2.OA.A.1

Front

What does it mean to 'borrow' in subtraction?

Back

Borrowing in subtraction is a method used when the top digit is smaller than the bottom digit in a column. You take 1 from the next left column to make the top digit larger.

Tags

CCSS.7.NS.A.1C