Subtract the following using the number line.
(i) –3 – (–2) 
(ii) +6 – (–5)

(i) Subtract (−40) from 70 
(ii) Subtract (-12) from (-20)

Find the value of :
(i) (-11) - (-33) 
(ii) (-90)-(-50)

Chitra has Rs.150. She wanted to buy a bag which costs Rs. 225. How much money does she need to borrow from her friend?

What is the balance in Chezhiyan’s account as a result of a purchase for Rs. 1079, if he had an opening balance of Rs. 5000 in his account?