Page 84 - Maths Class 05

5 4
3. 6 of the staff works part time at the aquarium. If 6 of the staff are male, what is the
4 5
fraction of the staff being female ?
4 3
4. The penguin nursery opens two times a day. 3 hours at noon and for 2 hours in the
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afternoon. For how much time does the penguin nursery open everyday ?
1 7
5. Kiara walked kilometre and jogged kilometre. How far did she go in all ?
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3 3
6. A girl took three jumps. The first jump was m long, the second was m long and the
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7
third was m long. How far did the girl jump in all ?
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Subtracting Like Fractions

3 2
Example : Hema ate of a pizza and Priya ate of a pizza. How much more did
5 5
Hema eat than Priya ?
3
3 2
Solution : – = ? 5
5 5

3 2 3 – 2 1 2
– = = 5
5 5 5 5

1
Thus, Hema ate of a pizza more than Priya.
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Subtracting Unlike Fractions

First, we change the unlike fractions into like fractions to subtract them.

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Example : Let us subtract from .
5 6

i.e., 5 – 2 = ?
6 5

Solution : Step 1 : Find the like fractions.

5 5 × 5 25
= =
6 6 × 5 30

2 2 × 6 12
= =
5 5 × 6 30

Step 2 : Subtract the like fractions.
25 12 25 – 12 13
– = =
30 30 30 30

Mathematics-5 84