Fractions
What is a fraction?
A part of a whole
1/8 + 4/8 = ?
5/8
5 x 4 = ?
20
12 / 4 = ?
3
3 x 5 = 15
5 x 3 = 15
What is the top number of a fraction called?
The numerator
1/3 + 2/6 = ?
4/6
12 x 6 = ?
72
24 / 8 = ?
3
What is a mutliplication problem for 27 / 3 = 9
3 x 9 = 27
9 x 3 = 27
What is the bottom number of a fraction called?
The denominator
2/5 + 4/6 = ?
32/30
23 x 8 = ?
184
144 / 12 = ?
12
What is a division problem for 8 x 9 = 72?
72 / 9 = 8
72 / 8 = 9
What should you make sure to have before you can add or subtract fractions?
A common denominator
5/9 - 3/7 = ?
8/63
46 x 8 = ?
368
245 / 5 = ?
49
What is a multiplication problem for 63 / 9 = 7 ?
7 x 9 = 63
9 x 7 = 63
What does the denominator (bottom number) tell us?
How many total pieces there are
7/8 - 2/12 = ?
17/24
42 x 25 = ?
1,050
352 / 3 = ?
117 R. 1
What is a division problem for 7 x 6 = 42 ?
42 / 6 = 7
42 / 7 = 6