Page 189 - Start Up Mathematics_4

7. Find the perimeter of the following figures.

(a) 7 cm (b) 6 cm
2 cm

4 cm 4 cm
4 cm
2 cm
6 cm
7 cm
8. Draw the reflection of the following shapes.

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(a) (b) (c)

9. Using the following code, decode the given message.
a b c d e f g h i j k l m n

0 2 4 6 8 10 12 14 16 18 20 22 24 26

o p q r s t u v w x y z

28 30 32 34 36 38 40 42 44 46 48 50
Message: 38 14 8 32 40 16 4 20 2 34 28 44 26 10 28 46 18 40 24 30 36
28 42 8 34 38 14 8 22 0 50 48 6 28 12.

10. Add 9,819, 5,746 and 2,459 and check by casting out 9.

SOME NCERT TEXTBOOK QUESTIONS

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1. One day Gibli the ant saw a big box on her way. It looked like this.

Gibli moved across and turned left. Now she could see the other face 5
of the big box.

1
Gibli was confused. What was this box? She climbed on a cup and
tried to see from there. The box looked like this. 4 5

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