Math Topic 8 Review

Front

What is mental math?

Back

Mental math is the ability to perform calculations in your head without using a calculator or paper.

Front

How do you break apart numbers into hundreds, tens, and ones?

Back

You separate the number into its place values. For example, 332 can be broken into 300 + 30 + 2.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.

Front

How can you check your subtraction answer?

Back

You can check your subtraction answer by adding the result to the number you subtracted.

Front

What is the sum of 243, 132, and 221?

Back

The sum is 596.

Front

What does it mean to check your work?

Back

Checking your work means verifying that your answer is correct by using a different method.

Front

What is a bar diagram?

Back

A bar diagram is a visual representation of numbers or equations using bars to show relationships.

Front

What is the sum of two numbers?

Back

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

Front

What is the difference in subtraction?

Back

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

Front

What is the first step in solving an addition problem?

Back

The first step is to identify the numbers you need to add.