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Practice Time 7E

1. Find the sum of the following:
2 2 3 4 3 4 7
(a) + (b) 2 + 1 (c) 2 + 1 +
5 9 7 7 5 10 15
2. Find the difference of the following:
6 2 13 6 1 1 1
(a) − (b) 4 − (c) 7 − 3 − 2
48 48 14 7 8 4 12
3. Simplify the following:

3 1 1 13 4 1 1 2
(a) 3 + 2 − 5 (b) 1 + − (c) 6 − 2 + 1
4 3 6 15 9 3 3 7
3
4. What should be added to 14 to get 20?
5
1 3
5. Mary bought 3 m of lace. She used 1 m of lace for her new dress. How much lace is left with her?
2 4

6. Prabhat spent 2 of his pocket money on Maths book, 1 on a Comic book, 4 on a Horror book.
5 6 15
What fraction of his pocket money is left?
3 1
7. A bag of wheat weighs 4 kg. A bag of rice weighs 2 kg. Which bag is heavier and by how much?
4 10

www
MAths connect

In 1891, Canadian physical education teacher James Naismith created basketball in Springfield,
Massachusetts, with the goal of creating a sport that would be less prone to injuries than football.
He invented indoor sports basketball to keep sportsmen indoors during the winter.
To improve the player’s skills, teamwork and prepare them for the national basketball championships the
principal of St. Joseph School, order to prepare a basketball court in the school ground of the given dimension
as shown in the following figure.
Basket Ball Court
4 m
3

14 2 m
3
5 m 5 m
3 3

4 m
3
1
28 m
3
1. Find the perimeter of the playing area of the given court.
2. Do you like to play basketball? What fraction of your classmates are playing basketball?

221 Fractions