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WorksheetsFraction Addition and Subtraction
Total questions: 13
Worksheet time: 13mins
2/3 + 2/3 =
They don't speak the same language. We must find the common multiples of 3 and 3.
4/6
4/3
4/9
When we add and subtract fractions, they must _____ the ____ __________.
talk; French language
speak; same language
add; same denominator
dance; same ballerina
What should Carl do next?
Circle "6" and use it as the common denominator
Circle "12" and use it as the common denominator
Add 1/3 + 3/4 and get 4/7
List all of the multiples of 1
Why are the denominators both 12 on the bottom?
Because 1/3 x 3/4 = 3/12 - when we multiply 12 is the denominator
Because you can pick any denominator you want - it's a free country, isn't it?
Because 12 is the lowest common multiple of both 3 and 4
Trick question! The denominator SHOULD be 24!
What goes in the pink box?
x4
x3
x12
x1
What goes in the RED box?
(a)
LOOK CLOSELY: what mistake has CJ made?
Trick Question - CJ never make no mystak
CJ skipped 10 - 10 is a multiple of both 3 and 9.
CJ didn't circle 9 - 9 is the lowest common multiple!
CJ didn't multiply 3 and 9 together and get 27!
Why are the denominators both 9 on the bottom?
Because 9 is the least common multiple of both 3 and 9.
Trick question! The denominator could and SHOULD be 18!
Because we always choose the highest denominator to add or subtract.
Trick question! The denominator SHOULD be 27!
TAKE YOUR TIME: finish solving the problem.
2/0
4/9
8/9
2/9
How do you feel about adding and subtracting fractions?
I GOT THIS and I can teach someone else!
I GOT THIS! Hit me with some more.
I think I'm getting it, but I need more practice.
I still need help!
Who is Mr. Polkowski's Grizzly of the Month for January?
Juan
Luis
Alondra
Nayelis
Who is Ms. McDermott's Grizzly of the Month for January?
Guillermo
Jayden
Kendra
Eva
Match these equivalent fractions.
5/10
2/4
4/8
2/8
5/20
4/6
8/12
75/100
6/8
