Lesson 3 and 4 Vocabulary Practice

What does it mean to "round" a number?

• To find the exact value of a number

• To approximate the value of a number by finding the nearest ten, hundred, or other place value

• To multiply the number by ten

• To divide the number by two

What is the definition of "estimate" as a verb?

• To find the exact value of a number

• To give an approximate number or answer based on mathematical thinking

• To subtract one number from another

• To add two numbers together

If you estimate the sum of 23 and 48, which of the following is a reasonable estimate?

• 60

• 70

• 80

• 90

Which of the following is an example of rounding a number?

• Changing 123 to 120

• Adding 5 to 10

• Subtracting 3 from 8

• Multiplying 4 by 2

What is something that makes sense when given facts are taken into account?

• addend

• round

• estimate

• reasonable

Find the sum of 10,341 and 23,859

• 34,190

• 34,200

• 34,100

• 13,518

What does "addend" refer to?

• A number being added

• The result of addition

• To approximate the value of a number

• A set of routine steps used to solve problems

What does "regroup" mean in mathematics?

• To approximate the value of a number

• To give an approximate number or answer

• To compose or decompose ones, tens, or hundreds

• A set of routine steps used to solve problems

A set of routine steps used to solve a problem

• sum

• estimate

• addend

• algorithm

What is the result of rounding 456 to the nearest hundred?

• 400

• 450

• 460

• 500