Class 5 Maths How Big How Heavy Extra Questions

IMPORTANT QUESTIONS FOR CBSE EXAMINATION | CLASS 5 MATHEMATICS | HOW BIG – HOW HEAVY? – Lesson 13

Fill in the blanks (1 mark):

1. The amount of space occupied by an object is its —————–

2. 1000 millilitre is equal to ———— litre

3. Volume of a cube of side 3 cm is ——– cu cm.

4. Half of one litre is same as ———— milliliter.

5. If the volume of a cube is 27 cubic cm, its one side is ——————

Answer the following (2 marks):

6. Find the volume of a cuboid of length 4 cm, breadth 2 cm and height 3 cm?

7. The length, breadth and height of the inside of a rectangular box are 100 cm, 80 cm and 60 cm. How many centimeter cubes can be fitted in that box?

8. A water tank has length 9 cm, breadth 7 cm and height 5 cm. How many cubic metre of water can it hold?

9. A brick is 24 cm long, 14 cm wide and 10 cm high. Find the space occupied by 500 such bricks?

10. Find the volume of a cuboid of side 8cm x 6 cm x 5 cm and a cube of side 9 cm.
Which has greater volume?

11. The volume of 6 marbles is 5 ml. Then find the volume of
a) 24 such marbles
b) 30 such marbles.

12. A 2 rupee coin weighs 6g. What is the weight of a sack with:
a) 1500 coins?
b) 3000 coins?

13. A match box measure 6 cm x 5 cm x 4 cm. Find its volume?

14. Find the volume of a cube whose edge is 15cm long?

15. How many cubes of side 5 cm can be packed in a box of 30 cm x 25 cm x 20 cm?

ANSWERS:

1. Volume

2. one liter

3.27 cu cm

4.500 ml

5.3 cm

6. Volume =l x b x h = 4 x 2 x 3 = 24 cu cm

7. Given l =100 cm, b = 80 cm, h =60 cm

Volume = l x b x h = 100 x 80 x 60 = 480000 cu cm.

8. Given l = 9 cm, b= 7 cm, h = 5 cm

Volume = l x b x h = 9 x 7 x 5 = 315 cu cm.

9. Given l = 24 cm, b = 14 cm, h = 10 cm

Volume of one brick = l x b x h = 24 x 14 x 10 = 3360 cu cm.

10. Volume of a cuboid = l x b x h = 8 x 6 x 5 = 240 cu cm

Volume of a cube = l x b x h = 9 x 9 x 9 = 27 cu cm.
Therefore, cuboid has a greater volume.

11. The volume of 6 marbles = 5 ml

a) Volume of 24 such marbles = 5 x 4 = 20 ml
b) Volume of 30 such marbles = 5 x 5 = 25 ml

12. Weight of a two rupee coin = 6 g

a) Weight of a sack with 1500 coins = 1500 x 6 = 9000g = 9 kg
b) Weight of a sack with 3000 coins = 3000 x 6 = 18000 kg

13. Volume = l x b x h = 6 x 5 x 4 = 120 cu cm

14. Volume of a cube = l x b x h = 15 x 15 x 15 = 3375 cu cm

15. Volume of a cuboid = l x b x h = 30 x 25 x 20 = 15000 cu cm

Volume of a cube = l x b x h = 5 x 5 x 5 = 125 cu cm
Number of cubes that can be packed in a box = 15000 / 125 = 120 cubes.