## ML Aggarwal Class 6 Solutions for ICSE Maths Chapter 7 Decimals Ex 7.4

Question 1.

Evaluate the following:

(i) 3.7 × 4.5

(ii) 12.08 × 9.3

(iii) 238.06 × 7.5

(iv) 0.79 × 32.4

(v) 3.6 × 1.4 × 0.7

(vi) 9.01 × 2.5 × 1.6

Solution:

Question 2.

Work out the following:

(i) 70.756 ÷ 4

(ii) 2.46 ÷ 6

(iii) 3.016 ÷ 8

(iv) 8.64 ÷ 3.6

(v) 72.8 ÷ 0.04

(vi) 0.144 ÷ 0.02

Solution:

Question 3.

Multiply each of the following numbers by 10, 100 and 1000 orally ;

(i) 4.7

(ii) 3.45

(iii) 23.01

Solution:

(i) 4.7

4.7 × 10 = 47

4.7 × 100 = 470

4.7 × 1000 = 4700

(ii) 3.45

3.45 × 10 = 34.5

3.45 × 100 = 345

3.45 × 1000 = 3450

(iii) 0.234

0. 234 × 10 = 2.34

0.234 × 100 = 23.4

0.234 × 1000 = 234

Question 4.

Divide each of the following numbers by 10, 100 and 1000 (orally):

(i) 4.7

(ii) 3.45

(iii) 23.01

Solution:

(i) 4.7

4.7 ÷ 10 = 0.47

4.7 ÷ 100 = 0.047

4.7 ÷ 1000 = 0.0047

(ii) 3.45

3.45 ÷ 10 = 0.345

3.45 ÷ 100 = 0.0345

3.45 ÷ 1000 = 0.00345

(iii) 23.01

23.1 ÷ 10 = 2.301

23.1 ÷ 100 = 0.2301

23.1 ÷ 1000 = 0.02301