Question

1) Simplify the following: - (i) (-34) + 52 + (-68) - (- 100) (ii) 275 + (-856) + (-7458)

2) simplify the following fractions: - (i) 7

12

+

5

16

−

9

24

(ii) 6 1

2

+ 7

1

3

− 4

7

9

3) Waheeda’s school is at a distance of 5 km 350 m from her house. She travels 1 km 70 m

on foot and the rest she travels by bus. How much distance does she travel by bus?

4) The cost of 17 chairs is Rs 9605. Find the number of chairs that can be purchased in Rs

56500.

5) Find the number of lines of symmetry in each of the following shapes.​

Answer 1

Answer:

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Step-by-step explanation:

i) (-34) + 52 + (-68) - (- 100)

= (-34) + 53 + (-68)  +100

=51

ii)275 + (-856) + (-7458)

=-8093

Answer 2

Step-by-step explanation:

3. The distance of school from her house

= 5km 350 m = 5000m +350 m = 5350 m

The distance covered by her on foot

= 1 km 70 m = 1000m +70m = 1070 m

The remaining distance she travels by bus.

So, the distance covered by bus

= 5350 m - 1070 m = 4280 m = 4km 280 m