Place Value Study Guide Test Date: ______________________________ Digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Place Value Names and Locations: The comma is located in between the hundreds place and thousands place. Place: The LOCATION of a digit in a number 316,758 - The 8 is in the ones place. 316,758 - The 5 is in the tens place. 316,758 - The 7 is in the hundreds place. 316,758 - The 6 is in the thousands place. 316,758 - The 1 is in the ten thousands place. 316,758 - The 3 is in the hundred thousands place. Value: How much a digit is WORTH. 316,758 - The value is 8 because the 8 is in the ones place. 316,758 - The value is 50 because the 5 is in the tens place. 316,758 - The value is 700 because the 7 is in the hundreds place. 316,758 - The value is 6,000 because the 6 is in the thousands place. 316,758 - The value is 10,000 because the 1 is in the ten thousands place. 316,758 - The value is 300,000 because the 3 is in the hundred thousands place. Representing Numbers Standard Form- A way to write numbers using DIGITS Ex: 4,576 Expanded Form – A way to write the number showing the sum of the value of the digits. Ex: 4,000 + 500 + 70 + 6 Word or Written Form- A way to write numbers using WORDS Ex: four thousand five hundred seventy-six Picture Form/Base Ten Blocks- Using base ten blocks to represent the number 70 4,000 6 500 Reading Numbers in written form: one = 1 eleven = 11 two = 2 twelve = 12 twenty = 20 three = 3 thirteen = 13 thirty = 30 four = 4 fourteen = 14 forty = 40 five = 5 fifteen = 15 fifty = 50 six = sixteen = 16 sixty = 60 seven = 7 seventeen = 17 seventy = 70 eight = 8 eighteen = 18 eighty = 80 nine = 9 nineteen = 19 ninety = 90 6 hundred = 100 thousand = 1,000 ten = 10 316,758 = three hundred sixteen thousand, seven hundred fifty-eight **THE COMMA MAKES YOU SAY THOUSAND** Comparing Numbers: > greater than 4,516 > 4,156 < less than = 526 < 652 83 equal to = 83 = 87 NOT equal = 12 Rules for rounding: If the number you are rounding is followed by a 5, 6, 7, 8, or 9, round the number UP. Example: 38 rounded to the nearest tens place is 40. If the number you are rounding is followed by a 0, 1, 2, 3, or 4, round the number DOWN. Example: 33 rounded to the nearest tens place is 30. When you are rounding inside of a big number: Circle the place in the number that you are rounding to Underline the digit to the right of the place you circled If that number is 5 or higher, you will round the number you circled up one and the digits to the right change to zero. (Digits to the LEFT are LEFT ALONE) If that number is 4 or lower, the number you circled will stay the same and the digits to the right change to zero. (Digits to the LEFT are LEFT ALONE) Ex: Round 4,687 to the nearest thousand. 4, 687 The 6 is greater than 5 so you round the 4 to 5 and the numbers to the right change to 0. Answer: 5,000 Other ways to remember the rounding rules: