we know that
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers
case a) We round the number to the nearest hundred
so
Round up is equal to 
Round up is equal to 
Find the estimate sum

case b) We round the number to the nearest tens
so
Round up is equal to 
Round down is equal to 
Find the estimate sum

A is right no more. I know that because 103x48=4944 and 122x44=4928 so 4944+4928 =9872 so 9872devided by 16= 224.3636363636364
Answer: 19 friends
Step-by-step explanation: 38 divided by 2 = 19
Answer:
Length of the building = 30 meters
Step-by-step explanation:
Given:
Length of pole = 5 meters
Length of shadow of pole = 3 meters
Length of shadow of the building = 18 meters
To find length of the building.
Solution:
On drawing the figure of the given situation, we get two similar triangles.
Applying proportionality theorem of similar triangles.

Plugging in the given lengths.

Multiplying both sides by 18.



Thus, length of the building = 30 meters
Answer:
470 cm
Step-by-step explanation:
4.7 x 100 = 470