Topic 2 Vocab Practice

What is the answer to an addition equation called?

• Difference

• Product

• Sum

• Quotient

What is the result of subtracting one number from another?

• Sum

• Difference

• Product

• Quotient

What are opposite operations that can undo each other called?

• Compatible Numbers

• Variables

• Inverse Operations

• Algorithms

What is a set of steps used to solve a math problem called?

• Variable

• Algorithm

• Estimate

• Rounding

What is a symbol or letter that stands for an unknown number?

• Sum

• Variable

• Estimate

• Rounding

What is one way to estimate by changing a number to its closest multiple?

• Compatible Numbers

• Rounding

• Algorithm

• Variable

What is an approximate number or answer called?

• Estimate

• Sum

• Difference

• Variable

What is one way to estimate by changing a number to something easy to solve mentally?

• Rounding

• Compatible Numbers

• Algorithm

• Variable

Which of the following is an example of finding a sum?

• 8.5 + 2.3 = x

• 2.4 - 1.5 = y

Which of the following is an example of finding a difference?

• 1.5 + 2.4 = b

• 30 - 2.5 = w