Selina solutions

Selina solutions

Grade 7

Decimal Fractions (Decimals) | Exercise 4(C)

Question 10

Q11) Evaluate:

(i) 0.0072\div0.06

(ii) 0.621\div0.3

(iii) 0.0532\div0.005

(iv) 0.01162\div0.14

(v) \left(7.5\times40.4\right)\div25

(vi) 2.1\div\left(0.1\times0.1\right)

Solution 11:

(i) 0.0072\div0.06

= \frac{0.0072}{0.06}=0.12

(ii) 0.621\div0.3

= \frac{0.621}{0.3}=2.07

(iii) 0.0532\div0.005

= \frac{0.0532}{0.005}=10.64

(iv) 0.01162\div0.14

= \frac{0.01162}{0.14}=0.083

(v) \left(7.5\times40.4\right)\div25

= 303\div25

= \frac{303}{25}=12.12

(vi) 2.1\div\left(0.1\times0.1\right)

= 2.1\div0.01

= \frac{2.1}{0.01}=210

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Question 10

Q11) Evaluate:

(i) 0.0072\div0.06

(ii) 0.621\div0.3

(iii) 0.0532\div0.005

(iv) 0.01162\div0.14

(v) \left(7.5\times40.4\right)\div25

(vi) 2.1\div\left(0.1\times0.1\right)

Solution 11:

(i) 0.0072\div0.06

= \frac{0.0072}{0.06}=0.12

(ii) 0.621\div0.3

= \frac{0.621}{0.3}=2.07

(iii) 0.0532\div0.005

= \frac{0.0532}{0.005}=10.64

(iv) 0.01162\div0.14

= \frac{0.01162}{0.14}=0.083

(v) \left(7.5\times40.4\right)\div25

= 303\div25

= \frac{303}{25}=12.12

(vi) 2.1\div\left(0.1\times0.1\right)

= 2.1\div0.01

= \frac{2.1}{0.01}=210

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