Addition and Subtraction within 1000 (End of Unit)

Front

What is rounding?

Back

Rounding is the process of adjusting a number to the nearest specified value, such as the nearest ten or hundred.

Front

When rounding to the nearest ten, what do you look at?

Back

You look at the digit in the ones place. If it is 5 or more, you round up. If it is 4 or less, you round down.

Front

What is the result of 763 - 389?

Back

374

Front

How do you find the total number of items when given two quantities?

Back

Add the two quantities together.

Front

If Anthony makes 23 sugar cookies and 7 more chocolate chip cookies, how many cookies does he make in total?

Back

He makes 53 cookies (23 + 30 = 53).

Front

What does a picture graph represent?

Back

A picture graph uses images or symbols to represent data and show quantities.

Front

What does the key on a picture graph tell us?

Back

The key tells us the value of each symbol (picture) used in the graph.

Front

How do you solve a subtraction problem?

Back

To solve a subtraction problem, take the smaller number away from the larger number.

Front

What is the difference between addition and subtraction?

Back

Addition combines numbers to find a total, while subtraction finds the difference between numbers.

Front

What is the sum of 45 and 32?

Back

The sum is 77 (45 + 32 = 77).