Page 85 - Maths Class 05

Subtracting Mixed Numbers

2 1
3
1
Example : A milkman had l of milk. He sold l of milk. How much milk is left
3 4
with him ?
2 1
Solution : 3 – 1 = ?
3 4
To subtract mixed numbers, first convert them to improper fractions.

2 1 11 5
3 – 1 = –
3 4 3 4

The LCM of 3 and 4 is 12.

11 11 × 4 44 5 5 × 3 15
= = ; = =
3 3 × 4 12 4 4 × 3 12

Now, subtract the improper fractions and express your answer in the

simplest form.

44 15 44 – 15 29 5
– = = = 2
12 12 12 12 12
2 1 5 5
2
Hence, 3 – 1 = 2 . Thus, the milkman had l of milk now.
3 4 12 12

Practice - 4.4
Practice - 4.4
Practice - 4.4
Practice - 4.4
1. Subtract.
7 1 1 1 5 5 1
a. – b. – c. – d. 7 –
6 3 2 3 6 12 4
5 3 3 5 1 9 3
e. – f. 8 – g. – h. –
6 5 4 6 2 10 10

11 1 2 1 1 2 1
i. – j. 2 – 1 k. 7 – 1 l. –

12 4 3 4 2 3 4
1 8 2 9 1 1 1
m. 3 – n. – o. – p. 7 – 2
2 9 9 10 2 3 4

1 1
2. A Juice pack contains l of Juice. Rinku drank l of it. How much juice is left in the
1
4 4
pack ?
1 2
3. Billy ate pizzas and John ate pizzas. How much more pizza did John eat than Billy ?
1
1
4 3
5 2
4. Nidhi had m of ribbon. She gave m to her friend. How much metres ribbon is left with her ?
7 7

Mathematics-5 85