Adding Fractions
The sum of 1/2 + 1/3
What is 5/6?
The difference of 7/8 - 1/2
What is 3/8?
What is the best estimate for 11/12 - 1/10?
A. 0
B. 1/2
C. 1
What is C. 1?
What number completes the table?
Rule: Multiply by 2
In Out
0 0
1 2
4 ?
5 10
What is 8?
Find the rule:
In Out
2 1
4 3
6 5
8 7
What is n - 1 (subtract 1)?
The sum of 2/5 and 1/4
What is 13/20?
The difference of 3/4 - 2/5
What is 7/20?
What is the best estimate for 4/9 + 3/5?
A. 0
B. 1/2
C. 1
What is C. 1?
What number completes the table?
Rule: n x 9
In Out
2 18
3 ?
5 45
7 63
What is 27?
Find the rule:
In Out
1 6
2 7
3 8
4 9
What is n + 5 (add 5)?
The sum of 7/8 and 1/4 (as a mixed number)
What is 1 and 1/8?
The difference of 4 and 3/5 - 2 and 1/4
What is 2 and 7/20?
What is the best estimate for 1/11 + 5/12?
A. 1/2
B. 1
C. 1 and 1/2
What is A. 1/2?
What number completes the table?
Rule: n - 4
In Out
10 ?
12 8
14 10
16 12
What is 6?
Find the rule:
In Out
2 8
4 16
6 24
8 32
What is 4n (multiply by 4)?
An aquarium has exhibits that feature different marine animals. The penguin nursery is open 2 times a day: 2/3 of an hour around noon and 5/12 of an hour in the afternoon. How much time is the penguin nursery open every day?
What is 1 hour and 5 minutes (1 and 1/12 hours)?
Jack needs to walk 7/10 of a kilometer to get to school. He has already walked 1/5 of a kilometer. How much farther does Jack need to walk?
What is 1/2 of a kilometer (5/10 of a kilometer)?
What is the best estimate for 5/8 - 1/6?
A. 0
B. 1/2
C. 1
What is B. 1/2?
What number completes the table?
Rule: 3n + 1
In Out
0 1
1 4
2 ?
3 10
What is 7?
Find the rule:
In Out
0 0
1 7
4 28
5 35
What is 7n (multiply by 7)?
An aquarium has exhibits that feature different marine animals. An octopus weighed 3/6 of a kilogram. After two weeks, its weight increased by 3/10 of a kilogram. After another two weeks, its weight increased by another 1/5 of a kilogram. What is its current weight?
What is 1 kilogram?
Mr. Henry set a record when he caught a salmon that weighed 24 and 3/4 pounds. Mr. Wilson caught a salmon that weighed 18 and 1/8 pounds. How much less than the record was this?
What is 6 and 5/8 pounds less?
What is the best estimate for 9/10 + 5/9?
A. 1
B. 1 and 1/2
C. 2
What is B. 1 and 1/2?
What number completes the table?
Rule: 5n - 2
In Out
1 3
2 ?
3 13
4 18
What is 8?
Find the rule:
In Out
1 3
2 5
3 7
4 9
What is 2n + 1 (multiply by two, then add one)?