Recall (Text Book Page No. 23):

Tick the heavier object.

Answer:

Question 1.
Find the number of 100g packets used to fill 3kg of rice.
Answer:
3kg =30 packets of 100g.

Exercise (Text Book Page No. 26):

Question 1.
Circle the odd one out.

i. a) gram
b) Kilogram
c) metre
Answer:
c) metre

ii. a) 50 g
b) 500 g
c) 100 cm
Answer:
c) 100 cm

iii. a) 1 m
b) 2 kg
c) 5 kg
Answer:
a) 1 m

Question 2.
Fill in the blanks.

i) 1000 grams = _____ kg
Answer:
1

ii) 2 kilograms = _____ grams
Answer:
2000

Question 3.
Write in short form.

i) gram = _____
Answer:
g

ii) Kilogram = _____
Answer:
kg

Question 4.
Find the number of bags to be used to fill the given items, if one bag can hold 100 g of the given items.

Answer:

Question 5.
Answer the following:

i) Price of 100g of ice cream is ₹ 20. Ramya bought 1Kg of ice cream. How much should she pay to the shopkeeper?
Answer:
Price of 100g ice cream = ₹ 20
Let 1 piece of ice cream = 100 g
Ice cream = 1 kg = 1000 g
No. of ice cream pieces for 1 kg = \(\frac{1000}{100}\) = 10 pieces
Price of 1kg ice cream = 10 × 20 = ₹ 200

ii) Price of 1 Kg of sugar is ₹ 50. Ranjith bought 2000 g of sugar. Find the amount she has to pay to the shopkeeper.
Answer:
Price of 1 kg sugar = ₹ 50
Ranjith bought 2000 g = 2 kg
Amount he has to pay to the shopkeeper = 2 × 50 = ₹ 100

iii) Saranya had 3 Kg of flour to be packed into packets of 500 g each. In how many packets can she pack the flour?
Answer:
Saranya had weight of flour = 3 kg = 3000 g
Weight of flour in a packet = 500 g
No. of packets = = 6 packets.

3rd Standard Maths Guide Measurements Additional Questions and Answers

I. Fill in the blanks.

(i) 3000 grams = _____ kg
Answer:
3

(ii) 4 kg = _____ grams
Answer:
4000

(iii) 4500 grams = _____ kg _____ grams
Answer:
4 kg 500 grams

(iv) 3250 grams = _____ kg _____ grams
Answer:
3 kg 250 grams

(v) 6 kg 400 gm = _____ grams
Answer:
6400.

II. Answer the following:

(i) Price of 1kg of rice is ₹ 60. Jaswitha bought 3000 g of Rice. Find the amount she has to pay to the shopkeeper.
Answer:
Price of 1kg of rice = ₹ 60
Jaswitha bought = 3000g = 3 kg
∵ 1kg = 1000 g
The amount she has to pay to the shopkeeper = 60 × 3 = ₹ 180

(ii) Samvardhini had 5 kg of Ice creams to be packed into packets of 500 g each. In how many packets can she pack the ice cream?
Answer:
Samvardhini had ice creams = 5kg = 5000g
∵ 1kg = 1000 g
Each packet had ice cream = 500g
∴ No. of packets can she packed = = 10 packets.

Samacheer Kalvi 3rd Standard Maths Guide