panda8840
7. 9/10 + 2/5 = 1 3/10 Solution: Find the lcm The lcd of 10 and 5 is 10 9/10 + 2/5 = ? /10 10 divided by 5 is 2 2 x 2 = 4 10 divided by 10 is 1 1 x 9 = 9
9 + 4 / 10 = 13/10 Convert the improper fraction to mixed number 13/10 = 1 3/10
panda8840
8. 8/42 + 7/21 = 11/21 Solution: Find the lcm The lcd of 42 and 21 is 42 8/42 + 7/21 = ?/42 42 Divided by 21 is 2 2 x 7 = 14 42 Divided by 42 is 1 1 x 8 = 8
8 + 14/ 42 = 22/42 22/42 Can be divided to 2 So the answer is 11/21
panda8840
8. 8/42 + 7/21 = 11/21 Solution: Find the lcm The lcd of 42 and 21 is 42 8/42 + 7/21 = ?/42 42 Divided by 21 is 2 2 x 7 = 14 42 Divided by 42 is 1 1 x 8 = 8
8 + 14/ 42 = 22/42 22/42 Can be divided to 2 So the answer is 11/21
9. 7 1/4 + 9 12/18 = 16 11/12 Solution Convert the mixed number to improper fraction 7 1/4 = 29/4 9 12/18 = 174/18 Find the lcm The lcd of 18 and 4 is 36 29/4 + 174/18 = ?/36 36 divided by 4 is 9 9 x 29 = 261
261 + 348/ 36 = 609/36 609/36 can be divided to 3 So the answer is 203/12 Convert the improper fraction to mixed number So the answer is 16 11/12
panda8840
10. 15 3/10 + 8 6/50 = 13 21/50 Solution Convert the mixed number to improper fraction 5 3/10 = 53/10 8 6/50 = 406/50 Find th lcm The lcd of 50 and 10 is 50
53/10 + 406/50 = ?/50 50 divided by 50 is 1 1 x 406 = 406 50 divided by 10 is 5 5 x 53 = 265 265 + 406/50 = 671/50 Convert the improper fraction to mixed number So the answer is 13 21/50
Answers & Comments
Answer:
7. 9/10 + 2/5 = 1 3/10
8. 8/42 + 7/21 = 11/21
9. 7 1/4 + 9 12/18 = 16 11/12
10. 15 3/10 + 8 6/50 = 23 21/50
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Solution:
Find the lcm
The lcd of 10 and 5 is 10
9/10 + 2/5 = ? /10
10 divided by 5 is 2
2 x 2 = 4
10 divided by 10 is 1
1 x 9 = 9
9 + 4 / 10 = 13/10
Convert the improper fraction to mixed number
13/10 = 1 3/10
Solution:
Find the lcm
The lcd of 42 and 21 is 42
8/42 + 7/21 = ?/42
42 Divided by 21 is 2
2 x 7 = 14
42 Divided by 42 is 1
1 x 8 = 8
8 + 14/ 42 = 22/42
22/42 Can be divided to 2
So the answer is 11/21
Solution:
Find the lcm
The lcd of 42 and 21 is 42
8/42 + 7/21 = ?/42
42 Divided by 21 is 2
2 x 7 = 14
42 Divided by 42 is 1
1 x 8 = 8
8 + 14/ 42 = 22/42
22/42 Can be divided to 2
So the answer is 11/21
9. 7 1/4 + 9 12/18 = 16 11/12
Solution
Convert the mixed number to improper fraction
7 1/4 = 29/4
9 12/18 = 174/18
Find the lcm
The lcd of 18 and 4 is 36
29/4 + 174/18 = ?/36
36 divided by 4 is 9
9 x 29 = 261
2 x 174 = 348
261 + 348/ 36 = 609/36
609/36 can be divided to 3
So the answer is 203/12
Convert the improper fraction to mixed number
So the answer is 16 11/12
Solution
Convert the mixed number to improper fraction
5 3/10 = 53/10
8 6/50 = 406/50
Find th lcm
The lcd of 50 and 10 is 50
53/10 + 406/50 = ?/50
50 divided by 50 is 1
1 x 406 = 406
50 divided by 10 is 5
5 x 53 = 265
265 + 406/50 = 671/50
Convert the improper fraction to mixed number
So the answer is 13 21/50
Answer:
7. 13/10
7. 13/108. 11/21
7. 13/108. 11/219. 16 11/12
7. 13/108. 11/219. 16 11/1210. 23 21/50