Addition of Fractions
1/5 + 1/5 = ?
2/5
5/10
The numerator a number that is above the fraction bar.
Ms. Kim will check.
Change 1 8/5 into a proper mixed fraction.
2 3/5
1/12 + 5/12 + 2/12 = ?
8/12
7 5/8 - 2 4/8 = ?
5 1/8
What are equivalent fractions?
Equivalent fractions are fractions that are the same as another fraction with a different denominator.
Laurie says summer is 1/4 of the year. Maria says summer is 3/12 of the year. Who is correct? Explain.
Both are correct.
1/4 = 3/12
What is a mixed fraction?
A mixed fraction has both a whole number and a fraction part.
2/5 + 5/6 = ?
37/30 --> 1 7/30
10 5/10 - 4 7/10 = ?
5 8/10
What is a fraction?
A math symbol that we use to represent part of a whole.
Explain how you know 21/100 is greater than 1/5.
1/5 is equivalent to 20/100.
20/100 < 21/100
Change 3 21/8 into a proper mixed fraction.
5 5/8
4 5/12 + 1 7/12 = ?
6
5 - 2 3/4=?
2 1/4
What is a common factor?
A common factor is a number that is a factor of two or more numbers.
Example) 1 and 3 are common factors of 6 and 9.
The bus took 4 3/5 hours to get from the station to Portland and 3 4/5 hours to get from Portland to Seattle. How long did the bus take to get from the station to Seattle?
8 2/5 hours
10/15 + 4/15 - 1/5 = ?
11/15
1 7/12 + 2 10/12 = ?
4 5/12
26 3/5 - 13 4/5 = ?
12 4/5
What does decompose mean when we are learning about fractions?
To break into parts.
Joe biked 1 9/12 miles from home to the lake, then went some miles around the lake, and then back home. Joe biked a total of 4 9/12 miles. How many miles did Joe bike around the lake?
1 3/12 miles
3 7/15