Add and Subtract Mixed Numbers
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Add and Subtract Mixed Numbers
With like and unlike denominators
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Lesson Objectives 6.C.1.d Add and subtract proper fractions and
mixed numbers with answers in simplest form
3.A.1.a Use technology tools, including software and hardware, from a range of teacher-selected options to learn a new content or reinforce skills
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Add:5
26
3
15
11
3/8
11
11/
15
12
3/8
12
11/
15
0% 0%0%0%
A. 11 3/8
B. 11 11/15
C. 12 3/8
D. 12 11/15
10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
4
Subtract:4
36
3
28 10
2
1/4
2
1/1
2
1
11/
12
15
5/1
2
0% 0%0%0%
A. 2 1/4
B. 2 1/12
C. 1 11/12
D. 15 5/12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
5
Add:7
26
5
412 10
19
3/3
5
18
38/
35
6
2/7
19
38/
35
0% 0%0%0%
A. 19 3/35
B. 18 38/35
C. 6 2/7
D. 19 38/35
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
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Subtract:4
121
8
735 10
57
1/8
14
9/8
14
5/8
4 5/
8
0% 0%0%0%
A. 57 1/8
B. 14 9/8
C. 14 5/8
D. 4 5/8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
7
Add:5
44
2
12
10
7
3/1
0
6
3/1
0
6
13/
10
7
2/5
0% 0%0%0%
A. 7 3/10
B. 6 3/10
C. 6 13/10
D. 7 2/5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
8
Subtract:5
37
8
316
10
9
1/3
9
79/
40
8
31/
40
8
1/3
0% 0%0%0%
A. 9 1/3
B. 9 79/40
C. 8 31/40
D. 8 1/3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
9
Add:4
320
3
215
10
35
17/
12
36
5/1
2
35
5/1
25
1/4
0% 0%0%0%
A. 35 17/12
B. 36 5/12
C. 35 5/12
D. 5 1/4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
10
Subtract:4
17
5
313
10
6
17/
20
20
17/
20
7
7/2
0
6
7/2
0
0% 0%0%0%
A. 6 17/20
B. 20 17/20
C. 7 7/20
D. 6 7/20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
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Add:6
550
8
345
10
95
29/
24
96
5/2
4
96
10/
48
5
2/2
0% 0%0%0%
A. 95 29/24
B. 96 5/24
C. 96 10/48
D. 5 2/2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
12
Subtract: 58
714 10
8
1/8
9
7/8
19
7/8
9
1/8
0% 0%0%0%
A. 8 1/8
B. 9 7/8
C. 19 7/8
D. 9 1/8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
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Val cut 2/3 of the lawn today. She cut 1/2 of the lawn in the afternoon. What fraction of the lawn did she cut in the morning?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32
0% 0%0%0%
A. 4/5
B. 1/3
C. 1/6
D. 3/8
10
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Five- eighths of the lunches sold in the cafeteria were pizzas. One –third of the lunches were hotdogs. What fraction of the lunches were either pizzas or hotdogs?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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10
2/3
7/2
4 6
/11
23/
24
0% 0%0%0%
A. 2/3
B. 7/24
C. 6/11
D. 23/24
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Luke spent 1 5/6 hours doing homework. He spent 2/3 of an hour on math problems and the rest of the time writing a report. How much time did Luke spend on his report?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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10
0% 0%0%0%
A. 1 5/6
B. 2 1/2
C. 1 1/6
D. 2 3/8
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Mike walked 2 1/6 miles, rested, and then walked another 1 5/6 miles. How far did he walk all together?
0% 0%0%0%
A. 1 2/3 miles
B. 3 1/2 miles
C. 3 1/4 miles
D. 4 miles
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Da’ Qwan had 2 3/8 pounds of sliced lunch meat. He used 1 1/2 pounds of it to make sandwiches. How much of the lunch meat did he have left?
0% 0%0%0%
A. 7/8 pounds
B. 1 7/8 pounds
C. 1 1/8 pounds
D. 3 2/5 pounds
10
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