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Math 111
Group Work Assignment #3
(Review of Chapter 2)
Part I: Write each value in expanded form and expanded form using power of
ten notation.
1) 43, 872.33
Expanded Form: ________________________________________________
Power of ten notation: ____________________________________________
2) 3.68234
Expanded Form: ________________________________________________
Power of ten notation: ____________________________________________
Part II: What place value is each underlined digit?
1) 146,789,000.04: ____________________
2) 65, 933.7782: ______________________
Part III: For each number line, find the value for x and y.
1)
-----------------------------------------------------
x = _____
2)
----------------------------------------------------
x = _____ y = ______
Part IV: Use a number line to explain why -6.1 < - 6.01
y = _____
Part V: The smallest integer that is greater than 2 is 3. Is there a smallest real
number that is greater than 2 but less than 3? Explain why or why not.
Part VI: Describe an infinite set of decimal numbers, all of which are greater
than 3.514 but get closer and closer to 3.514.
Part VII: Find two numbers between – 7.834 and – 7.8341.
Part VIII: List the two sets of numbers from least to greatest.
0.001, 10 4 , - 0.1, - 0.001, 0.00001
Part IX: Round each value according to the given place value.
1)
2)
3)
4)
Round 10,987.33 to the nearest ten-thousand: ______________
Round 0.9833 to the nearest hundredth: __________________
Round 101,983.5622 to the nearest hundred-thousand: ________
Round 5.993 to the nearest tenth place: ___________
Part X: Explain why or why not 7.100 > 7.90. Is this a true statement? Use 3
methods to explain this statement’s validity (or invalidity).
Part XI: Define each number as real, natural, whole, integer, and rational.
1) -22
2) 0.5
3) 4
4) 0
5) 8
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