Factors and Multiples
Which of these is a prime number, meaning it has no factors except for 1 and itself?
a. 6
c. 18
d.19
19
12/18 =
2/3
True or false: 5/8 is less than 1/2
False
3/8 + 3/8 = (simplify your answer!)
3/4
8 - 2 4/7
5 3/7
Which of the following is a composite number (meaning it is not prime?).
a. 5
b. 8
c. 7
8
65/9 =
7 2/9
True or false: 4/5 = 16/25
False
7/8 - 5/8 = (simplify your answer!)
1/4
Estimate the sum: 6 2/9 + 2 1/4 =
About 8
What are all the factors of 32?
1, 32, 2, 16, 8, 4
12 1/3 =
37/3
True or false: 5 3/8 = 5 6/16
True
7/12 + 3/4 = (simplify your answer!)
1 1/3
Tod lives 2 2/3 miles from school. Beth lives 4 miles from school. How much further from the school does Beth live than Tod?
1 1/3 miles
What is the Greatest Common Factor of 8 and 12?
4
45/4 =
11 1/4
Which of the following is smallest: 6/5, 5/4, 13/10, 29/25
29/25
11/12 - 1/8 = (simplify your answer!)
19/24
7 1/8 - 4 2/3
2 11/24
What is the Least Common Multiple of 6 and 8?
24
Which fractions are equal to 15/20? Pick all that apply (hint: simplify all fractions first).
a. 9/12
b. 6/9
c. 12/16
d. 18/24
a, c, and d
Order from greatest to least: 2 7/10, 2 4/5, 2 5/8
2 4/5, 2 7/10, 2 5/8
3/4 + 3/10 + 1/5 = (simplify your answer!)
1 1/4
There are 15 1/3 yards of material on a bolt. If 4 3/4 yards are used, how much material is left on the bolt?
10 7/12