Things to remember.....
 A fraction is a number representing a part of a whole. The whole may be a single object or a group of objects.
 When expressing a situation of counting parts to write a fraction, it must be ensured that all parts are equal.
 In 5/7 , 5 is called the numerator and 7 is called the denominator.
 Fractions can be shown on a number line. Every fraction has a point associated with it on the number line.
 In a proper fraction, the numerator is less than the denominator. The fractions, where the numerator is greater than the denominator are called improper fractions. An improper fraction can be written as a combination of a whole and a part, and such fraction then called mixed fractions.
 Each proper or improper fraction has many equivalent fractions. To find an equivalent fraction of a given fraction, we may multiply or divide both the numerator and the denominator of the given fraction by the same number.
 A fraction is said to be in the simplest (or lowest) form if its numerator and the denominator have no common factor except 1.
Answer:
2  7  2×5  1×3  14+3  17  
a.  +  =  +  =  =  
3  15  3×5  7×3  21  21 
3  7  3×3  7×2  9+14  23  
b.  +  =  +  =  =  
10  15  10×3  15×2  30  30 
4  2  4×7  2×9  28+18  46  
c.  +  =  +  =  =  
9  7  3×7  7×9  63  63 
5  1  5×3  1×7  15+7  22  
d.  +  =  +  =  =  
7  3  7×3  3×7  21  2 
2  1  2×6  1×6  12+5  17  
e.  +  =  +  =  =  
5  6  5×6  6×5  30  30 
4  2  4×3  2×5  12+10  22  
f.  +  =  +  =  =  
5  3  5×3  3×5  15  15 
3  1  3×3  1×4  94  5  
g.  +  =  +  =  =  
4  3  4×3  3×4  12  12 
5  1  5×3  1×6  156  5  
h.  +  =  +  =  =  
6  3  6×3  3×6  18  18 
2  3  1  2×4  3×3  1×6  8+9+6  23  
i.  +  +  =  +  =  =  =  
3  4  2  3×4  4×3  2×6  12  12 
2  1  1  1×3  1×2  1×1  3+2+1  6  
j.  +  +  =  +  =  =  =  =  1  
3  3  2  2×3  3×2  6  6  6 
1  2  1  2  1+2  4+3  7  
k.  1  +  3  =  1+3  +(  +  )  =  4  +(  )=  = (  )  
3  3  3  3  3  3  3 
2  1  14  13  14×4  13×3  56+39  95  
l.  4  +  3  =  +  =  +  =  =  
3  4  3  4  3×4  4×3  12  12 
16  7  16×5  7×5  8035  45÷5  9  
m.  +  =  +  =  =  =  
5  5  5×5  5×5  25  25÷5  5 
4  1  4×2  1×2  83  5  
n.  +  =  +  =  =  
3  2  3×2  3×2  6  6 
2  
The metre length of ribbon, Sarita bought =  
5  
3  
The metre length of ribbon lalita bought =  
4  
2  3  2×4  3×5  8  15  13  
Total length of ribbon they bought =  +  =  +  =  +  =  
5  4  5×4  4×5  20  20  20 
1  
The piece of cake, Naina given  = 1  
2  
1  
The piece of cake, Najma given  = 1  
3  
1  1  3  4  3×3  4×2  17  5  
The total amount of cake was given to both of them =  1  +  1  =  +  =  +  =  = 2  
2  3  2  3  2×3  3×2  6  6 
Answer:
5. Complete the additionsubtraction box.
Answer:
6. A piece of wire 7/8 metre long broke into two pieces. One piece was 1/4 metre long. How long is the other piece? Answer:
7  
The length of wire  =  m  
8  
1  
The lenth of one broken piece of wire  =  m  
4  
7  1  7×1  1×2  7  2  72  5  
The length of other wire  =    =    =    =  =  
8  4  8×1  4×2  8  8  8  8 
9  
Distance of school from Nadinis house  =  km  
10  
1  
Distance travelled by bus  =  km  
2  
9  1  9×1  1×5  9  5  4  2  
Distance she walked =    =    =    =  =  km  
10  2  10  10  10  10  10  5 
Fraction of Asha's shelf filled with books 


Fraction of Samual shelf filled with books 


For Comparing we have to first find LCM of denominator of given fractions i.e.6, 5, which is 30 , using LCM we can find equivalent fractions of 5/6 and 2/5 with same denominator 30, which can compared easily  

1  11  
Time taken by jaidev to walk across the ground=  2  =  min  
5  5  
7  
Time taken by Rahul to walk across the ground=  min  
4  
11  7  11×4  7×5  44  35  
Comparing fraction of time for both  ,  ::  ,  ::  ,  
5  4  5×4  4×5  20  20  
35  44  
Clearly  <  
20  20  
44  35  4435  9  
∴Rahul takes less time by fraction =  =  =  =  min  
20  20  20  20 
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