Fractions Flashcards
When adding or subtracting fractions we need to have a common denominator first T/F
True
A common denominator of 1/2 and 1/6 is 12, but we could find a smaller one T/F
True
1/2 and 1/6 could be turned into 6/12 and 2/12, but we could also use 6 as a common denominator and then we wouldn’t have to change 1/6.
3/6 and 1/6
1/2 + 1/4 =
2/4 + 1/4 = 3/4
Reduce 4/12
1/3
3/6 is an improper fraction and should be changed to a mixed number T/F
False 3/6 is less than one, it just needs to be reduced.
When multiplying or dividing mixed numbers, a good first step is to turn them into improper fractions T/F
True 1 and 1/2 could be turned into 3/2 which will make it easier to multiply and divide.
When subtracting a fraction from a mixed number, we might have to “borrow” from the whole number to make the fraction big enough. T/F
True 25 and 1/4 - 3/4
We could make this 24 and 5/4 so that we could take away 3/4 from it.
When doing problems like this…
4/8 = ?/10
we sometimes need to reduce to help us find out what is equivalent… T/F
True
4/8 = 5/10 we reduced 4/8 to 1/2 then we can see the relationship between 1/2 and ?/10…. multiply both by 5.
Dividing by a fraction less than one, makes the answer bigger. T/F
True 3 divided by 1/2 = 6
Multiplying by 2 is the same as dividing by 1/2
True
1/2 and 2/1 are considered inverses.
True
What is the inverse of 3
1/3
