Todays Math Class

In todays math class we found the are of G C I F

C, D, I, E = 25m

I, F, E = 12.5m squared

A, H, B = 40m squared

B, C, H, G = 70m squared

C, G, F, I, = 52.5m squared

The area of the Rectangle is 200m squared

Percent

30% means 30 out of 100

Percent is a fraction out of 100 or a denominator of 100

____

100

eg. 30% = 30 = 0.30

___

100

We can use money skills to think of fraction decimal percent

something something something

_______ ________ ________

something 1 100

25 50 10

____ ____ ___

100 100 100

(25%) (50%) (10%)

Find 50 % of $84.60 = $42.30

Find 25% of $84.60 = $21.23

Find 10% of $92.30 = $ 9.23

Find 50% of $45.80 = $22.90

Find 25% of $ 50.00 = $ 12.50

Find 10% of $72.40 = $7.24

Using a ratio table find 37.5% of 120

HOMEWORK

Using the ratio table find:

75% of 16

60% of 90

40% of 80

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.

I hope this website helps:
http://pcimt.blogspot.com/2008/01/halfway-numbers.html