Prime Factorization
Greatest Common Divisor
Least Common Multiple
Equivalent Fractions & Mixed Numbers
Decimals & Compare/Order Rational Numbers
100
Write the prime factorization for 66.
2 x 3 x 5
100
Find the GCD for 120, 210.
GCD = 30
100
Find the LCM for 5, 12.
LCM= 60
100
Find two equivalent fractions for 21/24.
Answers will vary (e.g., 7/8, 42/48)
100
Write 0.85 as a fraction in simplest form.
17/20
200
2 x 5 squared is the prime factorization for what number?
50
200
Find the GCD for 50, 75, 125.
GCD = 25
200
Find the LCM for 6, 8, 16.
LCM = 48
200
Are these fractions equivalent? 6/12 and 13/26
Yes
200
Write 2/3 as a decimal. Round to the nearest hundredth if necessary.
0.67
300
Use a step diagram to find the prime factorization for 99.
3 squared x 11
300
Which number is the GCD for 18, 27, 45? A. 3 B. 5 C. 6 D. 9
D. 9
300
The LCM for 12, 15, and 36 is 180. True or False?
True
300
17/20 and 20/24 are equivalent fractions. True or False?
False
300
Compare -0.14 and -0.145. (Remember that they are negative numbers.)
-0.14 > -0.145
400
Is 2 squared x 19 equal 76?
Yes
400
The GCD for 14, 28, and 56 is 7. True or False?
False. The GCD is 14.
400
Ethan washes dishes every 4 days and weeds the garden every 10 days. If he did both chores today, how many days will pass before he does them both on the same day again?
20 days
400
Write 3 7/9 as an improper fraction.
34/9
400
Compare 11/5 and 1 2/3.
11/5 > 1 2/3
500
Use a factor tree to find the prime factorization for 28.
2 squared x 7
500
Reggie is designing displays for a music store. He has 36 CDs, 12 CD players, and 8 CD cases. What is the greatest number of identical displays Reggie can make if he uses all of the CDs, players, and cases?
4
500
A teacher is buying school supplies. Pencils come in boxes of 10, pens come in boxes of 12, and rulers come in boxes of 6. What is the least number of each type of box the teacher can buy to have an equal number of pens, pencils, and rulers?
60 of each or 6 boxes of pencils, 5 boxes of pens, and 10 boxes of rulers.
500
Write 41/8 as a mixed number.
5 1/8
500
Order the numbers from least to greatest: 0.8, -8/9, 7/8, -0.7
-8/9, -0.7, 0.8, 7/8
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