Vocabulary
The top number in a fraction that represents the part
numerator
3/7 + 4/7
7/7 = 1
9/10 - 5/10
4/10 = 2/5
Robert used 3/8 of a pound of turkey and 1/10 of a pound of arugula to make a sandwich. What was the weight of the turkey and arugula on Robert's sandwich?
3/8 + 1/10
15/40 + 4/40
19/40 of a pound
Connor brought 17/18 of a cake for snacking with the saints. He left with 1/6 of the cake. How much of the cake did Connor's class eat?
17/18 - 3/18
= 14/18 = 7/9 of the cake
A rough calculation, not an exact amount
estimation
7/15 + 3/15
10/15 = 2/3
11/12 - 9/12
2/12 = 1/6
Elaina had 9/12 of a box of cereal, but then poured out 1/8 for her silbings' breakfasts. How much cereal was left after breakfast?
9/12 - 1/8
18/24 - 3/24
15/24 of the cereal box
Paolo poured himself 2/15 of a quart of orange juice on Saturday and 1/20 of the quart on Sunday. How much juice did Paolo drink over the weekend?
2/15 + 1/20
8/60 + 3/60
11/60 of a quart of orange juice
To reduce the fraction
1/7 + 2/5
19/35
8/11 - 1/6
48/66 - 11/66
= 37/66
10/10 - 8/10 - 1/10
1/10 of the bag of candy left
Brooke brought 1/2 of a pie, Victoria brought 1/3 of a cake, and Mallory brought 5/12 of a pan of brownies to the Valentine's Day party. How many whole desserts did they have?
1/2 + 1/3 + 5/12
6/12 + 4/12 + 5/12
15/12 = 1 3/12 = 1 1/4 of a whole dessert
The largest factor that two numbers both have
Greatest Common Factor
3/5 + 2/3
19/15 = 1 4/15
7/9 - 2/4
28/36 - 18/36
10/36 = 5/18
The smallest multiple that two numbers both have
Least Common Multiple
5/9 + 8/15
25/45 + 24/45
= 49/45
= 1 4/45
19/8 - 1/5
95/40 - 8/40
= 87/40 = 2 7/40