Add or Subtract
When the denominator is the same you ____ the numerators?
add
When making equivalent fractions the operation done to the top must be the ____ as the bottom
same
When multiplying fractions which direction are you multiplying? Across, Up, Down
Across
When dividing fractions what does K C F stand for?
Keep Change Flip
What is the first step when converting a mixed number into a fraction?
Multiply the denominator by the whole number
When the denominator is the same you ____ the numerators?
Subtract
Find the missing number:
1/2 = ?/ 10
Solution
1x 5 = 5
2x 5 =10 (bottom)
Solve
1/3 x 2/6
Solution:
1/3 x 2/6 = 2/18 or if simpified 1/9
Solve:
3/5 (divided by) 1/3
9/5
Solution
3/5 x 3/1 = 9/5
What is the second step?
Add the number from step 1 to the numerator
1/3 + 1/3
Solution:
1/3+1/3= 2/3
Find the missing number:
1/3 = 3/?
Solution
?=9
1 x _3__ = 3
3 x 3 = 9
When multiplying a whole number by a fraction you can use? (hint look at the anchor charts)
Repeated Addition
Solve:
3/7 (/=divided by) 7/3
Solution
3/7 x 3/7 = 9/49
Third step:
True or False
the denominator will stay the same
True
Solution
3/7- 1/7= (3-1)/7
=2/7
Find an equivalent fraction for:
1/2
Solutions:
Examples: 2/4, 3/6, 4/8, etc
Solve
3 x 1/2=
Solution:
1/2+ 1/2+ 1/2 =
(1+1+1)/2
= 3/2 or 1 1/2
Solve
2 1/2 ( divided by) 3/5=
Solution
1st convert 2 1/2 into (2x2+1)/2= 5/2
2nd KCF
5/2 x 5/3 = 25/6
Solve:
2 2/5
12/5
Solution:
2x5+2= 12/5
Solve:
3/4 - 1/4=
3/4+ 1/4=
Solutions"
3/4 - 1/4 = 2/4
3/4 + 1/4 = 4/4 or 1
Find the missing number
?/?= 2/10
Solution:
1/5
Both 2 and 10 can be divided by 2
2/2=1
10/2=5
3 1/2 x 3 1/2 =
Solution:
49/4
Solve
3 1/3 (divided by) 2 1/3
Solution:
1st: 3 1/3 = (3x3+1)/3 = 10/3 and 2 1/3 = (2x3+1)/3 = 7/3
2nd KCF
10/3 x 3/7= 30/21 if simplified 1 3/7
8 7/9
79/9
Solution:
8x9+7=79