Lesson 9.11 Add Mixed Numbers
I can add mixed numbers
Steps
1. Add the fractions (use notes from 9.2/9.3 & 9.5/9.7)
2. Add the whole numbers
3. Make sure the answer is in simplest form.
Example:
3
+8
Add the
whole #’s
4
9
20
27
4
3
+8
11
+
4
9
20
add the
9
20
fractions
27
=
=
27
12
27
20
12
+
27
20
27
32
27
27
find a common
denominator (27)
add the
numerators (12 + 20)
divide to simplify
improper fractions
32 ÷27 = 1
combine
answers
11 + 1
5
27
= 12
5
27
5
27
Samples
Add. Show your work. Write your answers in simplest form.
1
3
8
8
1) 4 + 3 =
2) 2
3
10
+1
7
10
=
6
6
8
8
1
1
6
2
1
5
3
9
7
1
8
2
7
1
8
2
3
1
4
3
1
1
3
8
2
4
3) 3 + 3 =
4) 6 + 4 =
5) 3 + 2 =
6) 6 + 3 =
7) 6 + 5 =
8) 5 + 4 =
9) 4 + 6 + 2 =
10) 9
7
10
2
1
5
4
+6 +3 =