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3 rd Grade Comparing and Ordering Numbers

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## 3 rd Grade Comparing and Ordering Numbers

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**3rd GradeComparing and Ordering Numbers**Created by Barbara Fugitt Texarkana ISD**Vocabulary**• Place value - The value of a place of a digit in a number. • Digits - Any one of the tens symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 used to write numbers. • Greater Than (>) - A symbol used to compare two numbers, with the greater number given first. Example: 8 > 6 • Less Than (<) - A symbol used to compare two numbers, with the lesser number given first. Example: 6 < 8**Vocabulary**• Equal (=) - Two numbers or number sentences being alike in value on either side. • Compare - To examine 2 or more objects or people to find out how they are alike and how they are different. • Ordering - To put numbers or objects in a specific order. Example: listing from greatest to least or least to greatest.**Comparing Numbers**• Comparing numbers means to show one number is more than, less than, or equal to another number. • We use symbols to show the relationship. > = Greater than < = Less than = means equal to**Think of the signs like the mouth of an alligator. The**alligator is greedy and always eats the larger number. 58 > 25 Greater than symbol**No matter which way he faces, he still wants to eat the**bigger number. 25 < 58 Less than symbol**When two numbers are the same, you will use the equal sign**to compare them. 25 = 25**Lets try some!**16 25 < 1,275 1,105 > 155 130 > 5,607 7,902 < 335 675 <**Ordering Numbers**• Ordering numbers is putting numbers in a given order, either from least to greatest or greatest to least. • 1, 3, 7, 9, 11 is listed from least to greatest. • 11, 9, 7, 3, 1 is listed from greatest to least.**Ordering Numbers**• Lets put these numbers in order from least to greatest. • To put these in order, start in the hundreds place. • Look at the 5, 3, and 7. Out of those three numbers, which is the smallest? 536 365 725 The 3 is the smallest number, therefore 365 is the smallest number.**Ordering Numbers**• We see that 365 is the smallest number. • Now lets compare the 5 and the 7. • Which one of these two is smaller? 536 365 725 2 1 The 5 is the smallest number out of the two, therefore 536 is the next smallest number in the set.**Ordering Numbers**• We see that 365 is the smallest number. • We see that 536 is the middle number. • Therefore, which is the largest number? • How would we list them? 536 365 725 2 1 3 The 725 is the largest number. We would list them as 365, 536, 725.**Lets try one.Put these numbers in order from least to**greatest. 536, 126, 227 126, 227, 536**Lets try one.Put these numbers in order from greatest to**least. 2,603; 5,892; 1,879 5,892; 2,603; 1,879**Which one belongs in the middle?**• 136 C. 102 • B. 256 D. 302