Simplifying Fractions
6/8
(6÷2)/(8÷2)
Answer:
3/4
1 1/2
[(1xx2)+1]/2
Answer:
3/2
2/9 + 5/9
(2+5)/9
Answer:
7/9
9/15 - 5/15
(9-5)/15
Answer:
4/15
3/4 xx3/5
(3xx3)/(4xx5)
Answer:
9/20
5/8-:1/3
Keep Change Flip
5/8xx3/1
(5xx3)/(8xx1)=15/8
Answer:
1 7/8
Mrs. Campbell made cookies. One recipe calls for 3 1/4 cups of flour. The second recipe calls for 2 1/5 cups flour. How much flour did she use in all?
"In all" is a clue to add!
Answer: 5 9/20 cups of flour.
12/15
(12÷3)/(15÷3)
Answer:
4/5
8/3
(8-:3) = 2r2
Answer:
2 2/3
3/4 + 1/8
3/4 = 6/8
6/8 + 1/8
Answer:
7/8
1/3 - 2/9
1/3 = 3/9
3/9 - 2/9
Answer:
1/9
1/2 xx 2/5
(1xx2) / (2xx5) = 2/10
Answer:
1/5
5-:1/4
Keep Change Flip
5/1xx4/1
Answer:
20
Hannah counted 21 pieces of candy. She ate 4/7 of the candy. How much candy did she eat?
Multiply! Hannah ate 4/7 of the candy. She ate 4/7 OF 21 pieces of candy. We are asking, "What is 4/7 OF 21."
Answer: 12 pieces of candy.
16/24
(16-:8)/(24-:8)
Answer:
2/3
2 3/4
[(2xx4)+3]/4
Answer:
11/4
2/5 + 1/6
2/5 = 12/30
1/6 = 5/30
12/30 + 5/30
Answer:
17/30
2/3 - 3/8
2/3 = 16/24
3/8 = 9/24
16/24 - 9/24
Answer:
7/24
1 1/2 xx3/4
1 1/2 = [(1xx2)+1]/2 = 3/2
(3xx3)/(2xx4) = 9/8
Answer:
1 1/8
3/10-:7/8
Keep Change Flip
3/10xx8/7
(3xx8)/(10xx7)=24/70
Answer:
12/35
Before she went to the hairdresser, Sheila's hair was 17 1/2 cm long. When she left the salon, it was 15 1/4 cm long. How much of her hair did Sheila cut off?
Subtract. We are looking for the difference between the length of Sheila's hair before and after.
Answer:
12 1/4 cm
50/75
(50-:25)/(75-:25)
Answer:
2/3
723/100
723-:100=7r23
Answer:
7 23/100
16/21 + 15/21
16/21 + 15/ 21 = 31/21
Answer:
1 10/21
2 - 11/20
2 = 40/20
40/20 - 11/20 = 29/20
Answer:
1 9/20
4xx7/10
(4xx7)/(1xx10) = 28/10
(28-:2)/(10-:2)=14/5
Answer:
2 4/5
6 3/4-:5
6 3/4 = [(6xx4)+3)/4=27/4
Keep Change Flip
27/4xx1/5=27/20
Answer:
1 7/20
A group of Boy Scouts are cutting rope to prepare for their next rock climbing activity. They have 24 m of rope, and each Boy Scout will need 3 1/5m of rope for his gear. How many Boy Scouts will get their rope?
Divide! You are starting with the total amount of 24m of rope, and you are seeing how many 3 1/5m pieces the Boy Scouts can cut from that. Don't forget 24 has to come first, and you have to KCF! Exact Answer: 7 1/2, but no one wants to rock climb with 1/2 of a rope.
Answer:
7 scouts.
36/96
(36-:12)/(96-:12)
Answer:
3/8
12 5/8
[(12xx8)+5]/8
Answer:
101/8
3/4 + 5/6
3/4 = 9/12
5/6 = 10/12
9/12 + 10/12 = 19/12
Answer:
1 7/12
4 1/2 - 7/8
4 1/2 = 9/2
9/2 = 36/8
36/8 - 7/8 = 29/8
Answer:
3 5/8
2 1/4 xx 1 4/5
2 1/4 = [(2xx4)+1]/4=9/4
1 4/5 = [(1xx5)+4]/5=9/5
(9xx9)/(4xx5)=81/45
(81-:9)/(45-:9)=9/5
Answer:
1 4/5
7 1/4-:3 4/5
7 1/4=[(7xx4)+1]/4=29/4
3 4/5=[(3xx5)+4]/5=19/5
Keep Change Flip
29/4xx5/19=145/76
Answer:
1 69/76
It took Brad 3/5 of an hour to drive from his house to Jurong. Brad drove another 3/4 of an hour to Changi. How long did Brad drive in all?
"In all" is a big clue to add!
Answer:
17/20 of an hour or
51 minutes since 17/20 xx 60 = 51 minutes