Mr. Crosby's Class
Estimating Radicals to the nearest whole number
If a number has a radical and is not a perfect square:
Find the 2 closest perfect squares to the number is question (1 higher, 1 lower)
Examine the numbers to see which perfect square is closer to the original numbers (can do this by finding the difference)
- What is the square root of the number that is closest?
Estimating Radicals to nearest decimal
Use calculator to find the square root of the number
Look for the button that has the radical symbol.
- Round square root to appropriate decimal place.