Grade 5 Whole Numbers Study Guide

Grade 5 Unit Test (Whole Numbers) Study Guide

Students should be familiar with the following language:

·      Expanded Form – To write a number in expanded form, such as 8426, you break the number apart by place value (8000 + 400 + 20 + 6).

·      Standard Form – The standard form of a number is its numeral form, which we usually see the number in – 8426 is in standard form. Students should know how to write a number that is in expanded form or in the form of words (such as eight thousand, four hundred, twenty six) in standard form, and vice verse.

·      Total – The answer to an addition problem. Also known as Sum.

·      Difference – The answer to a subtraction problem.

·      Estimate – A guess. The EXACT answer is not needed. If you the word estimate is used in an addition problem, round the two numbers being added and then find the sum. 

·      About – When you see the word “about” used in a math problem, such as “about how many cats were there in the house…” it is asking for you to estimate!  

Students should know how to use estimation strategies to round numbers.  They should be able to round numbers to the nearest ten, hundred, thousand, and ten thousand, and to round using the front-end estimation strategy.

·      Remember: To round a whole number, look at the digit to the right of the place value being rounded. If the digit is 4 or less, the digit being rounded remains the same. If the digit is 5 or greater, add 1 to the underlined digit.

·      Front-End Estimation – Can be used when adding or subtracted numbers to find an estimate. The leftmost digit in the number remains the same and the rest become 0. 734 would become 700, 799 would become 700.

Students should be able to represent and describe whole numbers to 1 000 000 with pictures, symbols, and words. They should know how to order a series of numbers to 10, 000 from least to greatest. A good strategy to do this is by using a number line.

Students should know how to add or subtract numbers with up to 7 digits.   

Students should be able to identify the place value of a single number within a large number. For example, what is the place value of the 3 in 78, 342? A: Hundreds