Showing posts with label Show you know #2. Show all posts
Showing posts with label Show you know #2. Show all posts

Monday, November 8, 2010

Show You Know # 2

Question -
a) Identify a whole number with a square root between 8 and 9.
b) How many whole numbers can you find that have a square root between 8 and 9? Show your work.

a) 8 square = ?
8 x 8 = 64

a) 9 square = ?
9 x 9 = 81

So the square root of 72 will have a value between 8 and 9.


b) There are 16 whole numbers that have a square root between 8 and 9.

(8 square = 64)
(9 square = 81)
Between 64 and 81 there are 16 whole numbers

(if you cant see the square root thingy, the top one is 8 and the second one is 9)