Open Number Line

Front

What is an open number line?

Back

An open number line is a straight line that represents numbers without specific markers. It helps in visualizing addition and subtraction.

Front

How do you add numbers using an open number line?

Back

To add numbers, start at the first number on the line and make jumps to the right for each number you add.

Front

How do you subtract numbers using an open number line?

Back

To subtract numbers, start at the first number on the line and make jumps to the left for each number you subtract.

Front

What is the sum of 139 and 45?

Back

184

Front

If Mrs. Miner has 139 pencils and Ms. Carson has 45 more, how many pencils do they have together?

Back

323 pencils

Front

How many pretzels did Clark buy if he has 2 bags with 200 pretzels each?

Back

400 pretzels

Front

What is the total number of peanuts and pretzels Clark bought?

Back

553

Front

If there are 867 books in the library and 322 are checked out, how many are left?

Back

545 books

Front

What is the total number of books checked out if 322 were checked out in the morning and 131 in the afternoon?

Back

453 books

Front

How do you find the total when adding two numbers?

Back

You combine the two numbers to find the sum.