LCDs
The LCD for 1/5 and 1/2.
What is 10?
1/2 + 1/4
What is 3/4?
4/9 - 3/18
What is 5/18?
1/2 - 5/12
What is 1/12?
The difference between "least common denominator" and "least common multiple."
What is, "Not a whole lot."
The LCD for 5/6 and 1/3.
What is 6?
1/5 + 4/15
What is 7/15?
4/7 - 5/14
What is 3/14?
2/3 - 3/6
What is 1/6?
Doing most of the mid-check in your head.
What is, "A recipe for disaster"
The LCD for 3/8 and 7/10.
What is 40?
5/16 + 1/8
What is 7/16?
11/15 - 3/5
What is 2/15?
1/4 + 7/8
What is 9/8 or 1 1/8?
Fractions with the same value, like 1/2 and 50/100.
What are "equivalent fractions"
The LCD for 1/12 and 1/15.
What is 60?
5/18 + 1/9
What is 7/18?
21/28 - 3/4
What is 0?
4/9 + 3/18
What is 11/18?
A way you can always get a common denominator, but maybe not the least common denominator.
What is, "Multiply the denominators?"
The LCD for 1/6 and 13/21.
What is 42?
1/4 + 5/8
What is 7/8?
3/4 - 6/16
What is 7/16?
17/18 - 2/3
What is 5/18?
If you multiply a denominator by a number, what do you have to do to the numerator to keep the fraction equivalent?
What is "Multiply the numerator by the same number?"