Open Number Line

Front

What is an open number line?

Back

An open number line is a straight line that represents numbers without specific marks or labels. It helps us visualize addition and subtraction.

Front

How do you use an open number line to add numbers?

Back

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

Front

How do you use an open number line to subtract numbers?

Back

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

Front

What is the total number of books in the library if 867 books are there and 322 are checked out?

Back

545 books are still in the library after checking out 322 books.

Front

If 131 more books are checked out in the afternoon, how many books are left?

Back

414 books are left in the library after checking out a total of 453 books.

Front

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

Back

Clark bought 400 pretzels from 2 bags.

Front

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

Back

Clark bought a total of 553 snacks (400 pretzels + 153 peanuts).

Front

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

Back

Ms. Carson has 184 pencils (139 + 45).

Front

What is the total number of pencils Mrs. Miner and Ms. Carson have together?

Back

They have a total of 323 pencils (139 + 184).

Front

What does 'more than' mean in math?

Back

'More than' means to add a certain number to another number.