Definitions/Rules
The bottom number of a fraction
What is denominator
If you are dividing a whole number by a fraction you must first do what to the whole number?
Put a 1 underneath it to make it a fraction.
1/4 ÷ 1/2
2/4 or 1/2
2/4
1/2
1 ÷ 1/5
5
The top number of a fraction
What is the numerator
When multiplying fractions how do you multiply?
Straight across
2/3 ÷ 2/5
10/6 or 5/3 or 1 2/3
3/9
1/3
3 ÷ 1/3
9
What does K C F stand for?
What is keep, Change, flip
When dividing fractions, what do you do to the division (change) sign?
Change it to multiplication.
6/5 ÷ 3/4
24/15 or 8/5 or 1 3/5
1 3/8 Convert to an improper fraction
11/8
1/6 ÷ 3
1/18
Can we multiply or divide a mixed number?
No- it has to be a proper or improper fraction
When dividing fractions, what must you do to the second fraction in the problem?
Find its reciprocal or flip it
2 2/5 ÷ 1 3/4
28/35 or 4/5
Find the Greatest Common Factor
42 & 63
1 1/12
1/4 ÷ 6
1/24
What is another term for
"Flip" This is the correct term.
Trista's favorite word
Reciprocal
All fractions are also what kind of problems?
Division
4 2/7 ÷ 3 1/4
120/91 or 1 29/91
100/9
Convert to mixed
11 1/9
40 ÷ 1/6
240