Factors and Multiples
What are the first ten multiples of 4?
4, 8, 12, 14, 20, 24, 28, 32, 36, and 40
1/3 + 2/3 =
3/3= 1
1/4+2/8=
4/8=1/2
1 2/4 + 3 1/4=
4 3/4
Decompose 3/5 two different ways.
1/5+2/5
1/5+1/5+1/5
List all the factors of 16.
1, 2, 4, 8, 16
5/6-2/6=
3/6=1/2
5/6-2/3=
1/6
5 2/5 - 3 1/5=
2 1/5
What is the top number of a fraction called?
What is the bottom number called?
Numerator
Denominator
What is the LCM of 3 and 6?
3: 3, 6, 9, 12
6: 6, 12
12
4/5+2/5=
6/5= 1 1/5
4/5+1/2=
13/10=1 3/10
5 3/8 + 2 1/4=
7 5/8
What is a fraction with a numerator that is bigger than the denominator called?
Example: 4/3
Improper Fractions
What is the GCF of 24 and 18?
18: 1, 2, 3, 6, 9, 18
24: 1, 2, 3, 4, 6, 8, 12, 24
6
7/8-5/8=
2/8=1/4
2/3-4/6=
0/6=0
5 3/5 - 2 1/10=
3 5/10 = 3 1/2
Decompose 4/6 as a sum of unit fractions. (Hint: unit fractions have 1 in the numerator.)
1/6+1/6+1/6+1/6
What is a common denominator for 1/6 and 1/4?
12
1/2+1/2+1/2=
3/2=1 1/2
What number makes the equation true?
1/7+4/7=3/7+?/7
?=2
Miss Hatton's class recycled 7 2⁄4 boxes of paper in a month. If they recycled another 4 4⁄6 boxes the next month was is the total amount they recycled?
11 14/12 = 12 2/12= 12 1/6
Reduce 25/4 into a mixed number.
6 1/4