Addition and subtraction

1) Answer the Following Questions.

a) There Are 9 People on the Ground Floor. They Go Together by the Lift. 3 People Left the Lift on the 1st Floor. The Remaining People Are Left on the 2nd Floor. How Many People Are Left on the 2nd Floor?

b) There Are 4 Kids in the Lift on the 3rd Floor. Some Kids Entered the Lift on the 4th Floor. Now There Is a Total of 7 Kids in the Lift. How Many Kids Entered the Lift on the 4th Floor?

c) 4 People Are There in the Lift. On the Next Floor, 2 People Entered the Lift. How Many Total People Are There in the Lift Now?

d) There Are 5 Floors in the Building. From the Ground Floor, the Lift Carries 2 People on Each Floor. No One Has Left the Lift. How Many Total People Will Be There on the 5th Floor?

1. On the ground floor = 9 people
   On the 1st floor = 3 people left
   Remaining people = 9 – 3 = 6 people
   On the 2nd floor = 6 people left
   So, on the 2nd floor, 6 people left the lift.
2. On the 3rd floor = 4 kids
   On the 4th floor = 7 kids
   On the 4th floor entered kids = 7 – 4 = 3
   3 kids entered the lift on the 4th floor.
3. Number of people in the lift = 4
   On the next floor = 2 people entered
   Total number of people = 4 + 2 = 6 people
   There is a total of 6 people in the lift now.
4. Total number of floors = 5
   From the ground floor, the lift carries 2 people on each floor.
   Ground floor = 2 people
   1st floor = 2 + 2 = 4 people
   2nd floor = 4 + 2 = 6 people
   3rd floor = 6 + 2 = 8 people
   4th floor = 8 + 2 = 10 people
   5th floor = 10 + 2 = 12 people
   12 people will be there on the 5th floor.