ADD FRACTIONS, SUBTRACT FRACTIONS

PROBLEMS 2

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13.  Subtract these mixed units.

  11.   a)   8 hours     b)      8 hours  20 minutes
  11.   a) −  3 hours  50 minutes        − 3 hours  50 minutes
 11.   a) −  4 hours 10 minutes  11.   b) −   4 hours 30 minutes
  11.   c)   7 feet     d)      7 feet  14 inches
  11.   c)  −  4 feet  11 inches      −  4 feet  11 inches
 11.   a) −   2 feet  1 inch  11.   b) −    2 feet 5 inches
  14.   a)  6 − 1 2
3
 = 4 1
3
  b)  8 − 3 3
4
 = 4 1
4
 
   12.  c)  5 − 1 5
8
 = 3 3
8
  d)  9 − 4 1
5
 = 4 4
5

15.  Each whole number has been reduced by 1.  What is the missing
13.  numerator?

13.    a)   5 2
5
  =  4 7
5
  b)   6 3
8
  =  5 11
 8
  c)   9 1
3
  = 8 4
3
  d)   8 5
9
  =  7 14
 9

16.  Subtract.

   14.  a)  5 1
3
 − 2 2
3
 = 2 2
3
  b)  6 1
4
 − 1 3
4
 =    c)  9 3
8
 − 5 7
8
 = 
   13.  d)  7  3 
10
 − 6  9 
10
 =  2
5
  e)  8  5 
16
 − 2 15
16
 = 5 3
8
  f)  1  3 
20
 −   9 
20
 =   7
10

17.   Subtract.  (Compare Example 9.)

  14.    a)  6 1
8
 − 2 3
4
 = 3 3
8
  b)  5 1
2
 − 1 5
6
 = 3 2
3
   14.   c)  9 3
4
 − 2 5
6
 = 6 11
12
  d)  6 2
9
 −  5
6
 = 5  7 
18

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