Question 78 (ii)
Find the sum of 73 and −43
Given, 73 and −43 Sum =73+(−43) =73−43 =7−43 =33 =1
Question 1 (ii)
Find the sum: 53+35
Question 7 (ii) Without adding, find the sum:
1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19