Unit 2-Rounding, Estimating, Addition and Subtraction

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, or thousand.

Front

How do you round a number to the nearest ten?

Back

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

Front

What is the nearest ten for 45,728?

Back

45,730

Front

What is estimating in math?

Back

Estimating is finding a number that is close enough to the right answer, often used to make calculations easier.

Front

How do you estimate the sum of two numbers?

Back

Round each number to the nearest ten or hundred, then add the rounded numbers.

Front

What is the difference in math?

Back

The difference is the result of subtracting one number from another.

Front

How do you find the difference between two numbers?

Back

Subtract the smaller number from the larger number.

Front

What is the sum in math?

Back

The sum is the result of adding two or more numbers together.

Front

How do you find the sum of two numbers?

Back

Add the numbers together.

Front

What is the total weight limit for the elevator?

Back

The elevator can hold up to 1,000 pounds.