Addition and Subtraction

Front

What is the result of subtracting 67 from 763?

Back

696

Front

How do you find the total number of books in a collection with different genres?

Back

Add the number of books in each genre together.

Front

What is ten less than 100?

Back

90

Front

If a book has 500 pages and 474 pages have been read, how do you calculate the remaining pages?

Back

Subtract the number of pages read from the total pages: 500 - 474 = 26 pages. Then subtract any additional pages read.

Front

What is an alternative way to express the addition of 348 and 145?

Back

You can break it down into hundreds, tens, and units: 400 + 90 + 3.

Front

What is the basic principle of addition?

Back

Addition is the process of combining two or more numbers to get a total.

Front

What is the basic principle of subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

How do you check your subtraction work?

Back

You can add the difference to the subtracted number to see if it equals the original number.

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the numbers you are adding does not change the sum.

Front

What is the associative property of addition?

Back

The associative property states that the way in which numbers are grouped when adding does not change the sum.