Class 6 - Mathematics : Decimals
Exercise : 8.6
Top Block 1
Question: 1.Subtract:
(a) 18.25 from 20.75
(b) 202.54 m from 250
(c) 5.36 from 8.40
(d) 2.051 km from 5.206 km
(e) 0.314 kg from 2.107 kg
Answer :
(a) Rs. 2.50
(b) 47.46 m
(c) Rs. 3.04
(d) 3.155 km
(e) 1.793 kg
Question: 2.Find the value of:
(a) 9.756 – 6.28
(b) 21.05 – 15.27
(c) 18.5 – 6.79
(d) 11.6 – 9.847
Answer :
(a) 3.476
(b) 5.78
(c) 11.71
(d) 1.753
Question: 3.Raju bought a book of rRs. 35.65. He gave Rs. 50 to the shopkeeper. How much money did he get back from the shopkeeper?
Answer :
Total amount given to shopkeeper = Rs. 50
Cost of book = Rs. 35.65
Amount left = Rs. 50.00 = Rs. 35.65 = Rs. 14.35
Therefore, Raju got back Rs. 14.35 from the shopkeeper.
Question: 4.Rani had Rs. 18.50. She bought one ice-cream for Rs. 11.75. How much money does she have now?
Answer :
Total money = Rs. 18.50
Cost of Ice-cream = Rs. 11.75
Amount left = Rs. 18.50 – Rs. 11.75 = Rs. 6.75
Therefore, Rani has Rs. 6.75 now.
Question: 5.Tina had 20 m 5 cm long cloth. She cuts 4 m 50 cm length of cloth from this for making a curtain. How much cloth is left with her?
Answer :
Total length of cloth = 20 m 5 cm = 20.05 m
Length of cloth used = 4 m 50 cm = 4.50 m
Remaining cloth = 20.05 m – 4.50 m = 15.55 m
Thereofre, 15.55 m of cloth is left with Tina.
Mddle block 1
Question: 6.Namita travels 20 km 50 m every day. Out of this she travels 10 km 200 m by bus and the rest by auto. How much distance does she travel by auto?
Answer :
Total distance travel = 20 km 50 m = 20.050 km
Distance travelled by bus = 10 km 200 m = 10.200 km
Distance travelled by auto = 20.050 – 10.200 = 9.850 km
Therefore, 9.850 km distance travels by auto.
Question: 7.Aakash bought vegetables weighing 10 kg. Out of this 3 kg 500 g in onions, 2 kg 75 g is tomatoes and the rest is potatoes. What is the weight of the potatoes?
Answer :
Weight of onions = 3 kg 500 g = 3.500 kg
Weight of tomatoes = 2 kg 75 g = 2.075 kg
Total weight of onions and tomatoes = 3.500 + 2.075 = 5.575 kg
Therefore, weight of potatoes = 10.000 – 5.575 = 4.425 kg
Thus, weight of potatoes is 4.425 kg.