Page 79 - Revised Maths Wisdom Class - 6

Fractions 77

7 7 336× 2352 37, 16, 5, 3
⇒ = =
5 5 336× 1680 5 7, 16, 5, 1

7 = 7 105× = 735 7 7, 16, 11,
16 16 105× 1680 2 1 16, , 11,
3 = 3 240× = 720 2 1, 8, 1 1,

7 7 240× 1680 2 1, 4, 1 1,
5 = 5 560× = 2800 2 1, 2, 1,, 1
,
3 3 560× 1680 , 1 , 111
Comparing the numerators LCM = 1680
720 < 735 < 2352 < 2800 ⇒ 3 < 7 < 7 < 5
1680 1680 1680 1680 7 16 5 3

3 2
Example 3: Mini spent of her day in a work and Vini spent of her day in the same work. Who took more
time? 4 3
Solution: A day has 24 hours Alternative Method
3 3
⇒ of 24 = × 24 = 18 hours 3 2
4 4 To compare: and 3
4
2 2
of 24 = × 24 = 16 hours 3 × 3 and 4 × 2 (By cross multiplication)
3 3

3 2 9 > 8
18 > 16 ⇒ > 3 2
4 3 ⇒ >
Hence, Mini spent more time. 4 3

Exercise 5D
Exercise 5D
1. Write the shaded portions as fractions and arrange them in ascending order:

(a)

(b)

3 7 11 2
2. Represent ,, and on the number line and write them in descending order:
5 5 5 5