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.

Tags

CCSS.2.NBT.B.7

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 do you have left?

Back

7 apples.

Tags

CCSS.2.OA.A.1

Front

What is the subtraction sentence for the problem: 'There are 15 birds in 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 smaller number. If the sum equals the larger number, your subtraction is correct.

Tags

CCSS.1.OA.A.1

Front

What is a common mistake when subtracting?

Back

A common mistake is borrowing incorrectly when dealing with larger numbers, especially when the top digit is smaller than the bottom digit.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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

If a book has 200 pages and you read 75 pages, how many pages are left to read?

Back

125 pages.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the relationship between addition and subtraction?

Back

Addition and subtraction are inverse operations. If you add a number and then subtract the same number, you return to the original number.

Tags

CCSS.2.NBT.B.5

Front

In the problem 'An apple orchard has 1,901 trees. If 291 trees are in the first section and 772 in the second, how many are in the third section?', what is the subtraction operation?

Back

1,901 - 291 - 772 = 838.

Tags

CCSS.4.OA.A.3