Intervention
Lesson H45
Name
Adding Mixed Numbers
Materials fraction strips
Caroline is painting the ceiling border of her room. On Saturday, she
painted 13 feet. On Sunday, she painted 17
feet. How much did she
8
4
paint in the two days combined?
Find 13 + 17
by answering 1 to 10.
8
4
1. Estimate. 13 + 17
is about
8
4
+
=
.
with fraction strips.
2. Show 13 + 17
8
4
1
1
4
1
4
1
4
1 1 1 1 1 1 1
8 8 8 8 8 8 8
1
3. Put the ones together and the fractions together. Change 3 to eighths.
4
1
1
1
4
1
4
1
4
1 1 1 1 1 1 1
8 8 8 8 8 8 8
1 1 1 1 1 1
8 8 8 8 8 8
4. How many eighths equal 3? Write the number in 4
the box at the right.
5. Add the ones and write the sum at the right. Add
□
13 = 1 8
4
7
7
+ 18 = 18
□□
6
and 7
and write the sum at the right.
8
8
8
a proper fraction?
6. Is 13
8
7. Since 13
is improper, simplify. What is 13
as a mixed number?
8
8
8. Fill in the blank. 213
= 2 + 13
= 2 + 15
=
8
8
8
1
1
1
1
1 1 1 1 1 1 1 1 1 1 1 1 1
8 8 8 8 8 8 8 8 8 8 8 8 8
1
1 1 1 1 1
8 8 8 8 8
9. What is 13 + 17
? 8
4
10. How much border did Caroline paint in the two days combined?
Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.
H45 (student p. 1)
MDIS 2.0
Intervention
Lesson H45
Name
Adding Mixed Numbers
(continued)
11. Is the answer 35
close to the estimate of 4?
8
5
Since 35
is
close
to
the
estimate
of
4,
3
is a reasonable answer.
8
8
Add. Write the sum as a simplified fraction.
Estimate to check.
12.
21
2
13.
+ 11
3
16.
65
6
11
5
3
+ 310
17.
+ 53
8
20. 67 + 15
8
6
13
14.
+
61
9
18.
+ 32
3
4
2
5
43
4
+ 75
6
21. 71 + 23
7
2
5
212
15.
+ 35
6
1
616
19.
+ 43
8
22. 3 1 + 15
10
8
23. Ramona bought 12
pounds of strawberries,
3
21 pounds of apples, and 21
pounds of oranges
2
4
at the store. What was the total weight of
Ramona’s purchase?
24. Reasoning Rhonda needs 4 gallons of green paint to decorate
1 gallons of
her room. If she mixes 21
gallons
of
blue
paint
with
1
3
2
yellow paint, will she have enough? Explain.
Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.
H45 (student p. 2)
MDIS 2.0