Adding Fractions
What is the common denominator for 1/3 and 4/5?
15
What is the common denominator for 2/7 and 2/3?
21
23 x 10
230
7.45 + 3.25 =
10.70
4.6 -2.2
2.4
Rewrite the expression with common denominators using equivalent fractions:
6/8 and 7/12
18/24 and 14/24
3/4 and 2/6
9/12 and 4/12
47.3 x 100
4730
234.56 +12.099
246.659
.789 - .56
.229
6/9 + 2/3
12/9 or 1 3/9 or 1 1/3
1 1/3 - 1/2
5/6
24.78 / 10
2.478
34.5 + 456.23 + 768.001
1,258.731
.88 -.088
.792
The recipe called for 2 and 3/5 cups of flour and 3/10 cups of sugar. How many cups does the recipe have in all?
2 and 9/10
Miss Harris had 3 and 1/6 yards of fabric and Ms. Rowley 1 and 5/12 yards of fabric. How much more fabric does Miss Harris have than Ms. Rowley?
1 and 9/12 or 1 and 3/4
What is the exponent form of 1,000?
103
Mrs. Waterman wanted to make tropical punch. She combined 14.32 ounces of pineapple juice and 28.9 ounces of orange juice. How many ounces of tropical punch did she have all together?
43.22
Ms. Shawna drinks .9 gallons of water on Thursday and .62 gallons of water on Friday. How much more water did she drink on Thursday than Friday?
.28
If Mrs. Rogers runs 1 and 2/3 mile on Monday, 1 and 1/2 mile on Tuesday, and 1 and 3/4 on Wednesday, how many miles did she run in total?
Mrs. DeBoer started the day with 2 liters of coffee. By the end of the day, she only had 1/3 of a liter left. How much coffee did Mrs. DeBoer drink through out the day?
1 and 2/3
What is the unknown exponent:
3.45 x 10? = 345
102
Mr. O'Neal went to the store to buy fruit. He bought 3.45lbs of apples, 2.3lbs of oranges, and 7.011lbs of bananas? How many pounds of fruit does he have all together?
12.761
Mrs. Stumph has three avocados for making guacamole. If the weigh 4.56 ounces, 3.89 ounces, and 2.01 ounces, what is the difference between the weights of the heaviest and lightest avocado?
2.55