Samacheer Kalvi 7th Maths Solutions Term 2 Chapter 1 Number System Additional Questions

Samacheer Kalvi 7th Maths Solutions Term 2 Chapter 1 Number System Additional Questions

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 2 Chapter 1 Number System Additional Questions

Additional Questions and Answers

Exercise 1.1

Question 1.
Express as rupees using decimals.
(i) 4 paise
(ii) 4 rupees 4 paise
(iii) 44 rupees 44 paise
(iv) 50 paise
(v) 625 paise

Question 4.
Write the place value of 2 in the following decimal numbers.
(i) 2.47
(ii) 26.89
(iii) 36.28
Solution:
(i) 2.47 Place value of 2 in 2.47 is ones.
(ii) 26.89 Place value of 2 in 26.89 is Tens.
(iii) 36.28 Place value of 2 in 36.28 is tenths

Exercise 1.2

Question 1.
Explain the following as fractions.
(i) Ajar containing 3.6 litres of milk.
(ii) A cup containing 9.63 mg of medicine.

Exercise 1.3

Question 1.
Maya bought 5 kg 300 g bananas and 3 kg 250 kg oranges. Diya bought 4 kg 800 g apples and 4 kg 150 g of mangoes. Who bought more fruits.
Solution:
Total fruits bought by Maya = 5 kg 300 g + 3 kg 250 g = 8 kg 550 g = 8.550 kg
Total fruits Diya bought = 4 kg 800 g + 4 kg 150 g = 8 kg 950 g = 8.950 kg
Comparing the whole number parts, they are equal.
Comparing thet tenths place we get 9 > 5.
∴ 8.950 kg > 8.550 kg
∴ Diya bought more fruits.

Question 2.
Which is greater 28 km or 42.6 km.
Solution:
Comparing the whole number part 42 > 28.
42.6 km is greater than 28 km.

Exercise 1.4

Question 1.
Show that the following numbers in a number line.
(i) 0.2
(ii) 1.8
(iii) 1.1
(iv) 2.6
Solution:

Question 2.
Write the decimal numbers represented by the points A, B, C, D, E and F.
Solution:

A (0.5); B (1.2); C (2.3); D (2.8); E (3.4); F (3.9)