S K Gupta and Anubhuti Gangal Solutions for Exercise 5: Mental Maths

Express as a fraction: $0.009$

Add $0.2+0.4+0.9$

Subtract $0.37-0.25$

Express $0.4$ as a fraction in its lowest terms.

Using decimals, when we express $53 \mathrm{mm}$ as $\mathrm{cm}$ we get $A cm$. Find the value of $A$.

Add $₹ 15.28+₹ 10.09$

Subtract $5 \mathrm{m} 27 \mathrm{cm}$ from $9 \mathrm{m} 39 \mathrm{cm}$.

Using decimals, express $8 \mathrm{km} 73 \mathrm{m}$ as $\mathrm{km}$.