Showing posts with label maya43. Show all posts
Showing posts with label maya43. Show all posts

Tuesday, December 8, 2009

The Half and Differences between Numbers


The whole numbers that are between 7 and 13 are 8, 9, 10, 11 and 12.
The difference between 13 and 7 is 6.
13 - 7 = 6
Half of this difference is 3.
6 divided by 2 equals 3.
The number 10 is halfway between 7 and 13.
Like this:

7 + 3 = 10
Or...
13 - 3 = 10

Finding a halfway between numbers.

You can add the given numbers and divide it by two.
Like this..

70 and
170
70 + 170 = 240
And divide it by two. It equals
120.


And:





If you don't get it still, look at these examples we did during class...

1. What are the whole numbers between these given numbers?
68 and 72: The answer would be 69, 70, 71.
108.3 and 111.6: The answer would be 109 and 110

How? If you think of it as the alphabet, like, A B C, you know that
B is in between A and C.