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Unit 1 - Section 1

Place Value, Comparing Numbers, and Rounding

What is the definition of place value? The position of a digit in a number.
What is the definition of value? How much a digit in a number is worth.
How do you find the value of a digit? value = digit * place value Multiply the digit by the place value.
What is the order (from largest to smallest) of the place values on the place value chart? millions, hundred thousands, ten thousands, thousands, hundreds, tens, ones
What is the value of the 5 in 645,201? 5,000
What digit is in the ten thousands place of the number 1,365,837? 6
What is the rule, or pattern, as you go from the right to the left on the place value chart? *10
Which place value is 10 times the ten thousands place? How do you know? hundred thousands, because it is to the left of the ten thousands place.
Compare the value of the digit 3 in Grady's number (4,302) and in Dalia's number (3,402). The value of the 3 in Dalia's number is 10 times the value of the 3 in Grady's number.
Complete the equation with a multiplication or division symbol (* or /): 510,000 = 51,000 ____ 10 * (times)
Write the following number in expanded form: 7,289,491 7,000,000 + 200,000 + 80,000 + 9,000 + 400 + 90 + 1
Put the following numbers in order from least to greatest: 241,204; 241,402; 214,422 214,422; 241,204; 241,402
Compare: 9,898,989 ____ 9,899,989 < (less than)
Write the greatest number possible with the following digits: 3 6 8 5 4 2 1 8,654,321
Round 5,391 to the nearest: a.) thousands b.) hundreds c.) tens a.) 5,000 b.) 5,400 c.) 5,390
Round each number to the highest place value: a.) 561,029 b.) 392,261 c.) 1,696,386 d.) 25,602 e.) 9,382 a.) 600,000 b.) 400,000 c.) 2,000,000 d.) 30,000 e.) 9,000
Created by: Mr. Kearns