Least Common Denominator (LCD)
Adding Fractions
Subtracting Fractions
**Challenge
Questions**
Questions**
100
Find the Lowest common denominator (LCD) of the following fractions:
1/2 and 3/5
LCD = 10
100
1/25 + 9/25 =
1/25 + 9/25 =10/25 = 2/5
Simplify:
10÷5 = 2
_______
25 ÷5 = 5
100
12/25 - 10/25 =
12/25 - 10/25 = 2/25
100
Cindy put 2/3 cups of peanuts and 3/5 cups of popcorn into a bag for summer camp, as shown.
What is the total number of cups of peanuts and popcorn Cindy took to camp?
19/15= 1 4/15 cups of peanuts and popcorn.
200
Find the Lowest common denominator (LCD) of the following fractions:
5/12 and 2/9
LCD: 36
200
1/4 + 2/3 =
3/12 + 8/12 = 11/12
200
4/5 - 1/3 =
12/15 - 5/15 = 7/15
200
What is the difference between the amount of peanuts and the amount of popcorn in Cindy's bag?
1/15
300
Find the Lowest common denominator (LCD) of the following fractions:
1/4 and 2/12
LCD:12
300
1/4 + 3/7
7/28 + 12/28 = 19/28
300
6/7 - 1/2 =
12/14 - 7/14= 5/14
300
164
400
Find the Lowest common denominator (LCD) of the following fractions:
1/6 and 4/21
LCD: 42
400
True or False:
4/9 + 1/6 = 10/18
False.
8/18 + 3/18 = 11/18
400
True or False:
4/3 - 2/7 = 1 1/21
True.
28/21 - 6/21 =
22/21 OR 1 1/21
400
2
500
Find the Lowest common denominator (LCD) of the following fractions:
9/10, 5/6, and 2/3
LCD: 30
500
11/12 + 7/15 =
55/60 + 28/60 =
83/60 OR 1 23/60
500
11/12 - 7/15 =
55/60 - 28/60 = 27/60 = 9/20
27 ÷ 3 = 9
__________
60 ÷ 3 = 20
500
What is the name of Miss Jenny's dog?
Zeus