Topic 9 Envision

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. For example, in 421 - 238, you take 238 away from 421.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest ten, hundred, or other place value to make it easier to work with.

Front

What is the sum of two numbers?

Back

The sum is the result of adding two or more numbers together. For example, the sum of 362 and 619 is 981.

Front

How do you find the value of a digit in a number?

Back

To find the value of a digit, look at its place in the number. In 432,598, the 5 is in the hundreds place, so its value is 500.

Front

What is the difference between estimating and rounding?

Back

Estimating is making a close guess about a number, while rounding is adjusting a number to a specific place value.

Front

What is addition?

Back

Addition is the process of combining two or more numbers to get a total. For example, 231 + 128 = 359.

Front

What is the process to solve a multi-step math problem?

Back

To solve a multi-step math problem, break it down into smaller steps, solve each step one at a time, and keep track of your calculations.

Front

What does it mean to subtract from a number?

Back

Subtracting from a number means taking away a certain amount from that number. For example, subtracting 287 from 500 means you find how much is left after taking away 287.

Front

What is a place value?

Back

Place value is the value of a digit based on its position in a number. For example, in 432, the 4 is in the hundreds place.

Front

What is the term for the answer to a subtraction problem?

Back

The answer to a subtraction problem is called the difference.