Measures of central tendancy

Here's a video:

Math Notes

Here is video:

My answer to Diana's probability question

What is the probability of spinning a blue on the spinner below?

Express as a fraction, ratio and a percent.

The fraction,ratio and Percent is

3/12, 3:12, 25%

Probability Question

What is the probability that Abigail will find a bag that contains 3 red and 2 green, Abigail picks up a bead each time. What is the probability that red will be picked up?

Fractions, Decimals, Percents

In class today we learned that a

Fraction- is out of any whole #

e.g 1/2, 1/3, 1/4, 123/219

Decimal- is out of 1

e.g 0.5/1, 0.1/1, 0.001/1, 0.123/1, 0.2/1

Percent- is out of 100

e.g 50% 2% 25%

50/100 2/100 25/100

% means /100

Today we had to find out what 50% out of 10 was, 77% of 17, and 62.5% 24

For the rest of the class we worked on our textbooks pages 129-131

#1-3

Our homework for today is doing our homework booklets pages 40-41

Here is a video to help you.

Here is a game to http://nrich.maths.org/1249 .

Order of Operations

B- brackets

E- exponents

D- division

M- multiplication

A- addition

S- subtraction

First you have to see if you have any brackets on in you question, you should add them together.

Next see if you have any exponents in your question, you should also add them together.

Then see if you have any division or multiplication in your question, start from left to right, which ever one comes up first.

Next see if you have any addition or subtraction, you also start from left to right, which ever one comes first.

E.g

2x (4+8) ÷ 2-1 =

\ /

2x 12 ÷ 2-1=

\ /

24 ÷ 2-1 =

\ /

12 -1 =

11

Here is a video to help you more on BEDMAS.

Here is link to help you

http://www.mathplayground.com/order_of_operations.html

Homework :

1. Annie has asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

1.7 + 3 = 4.7

2. Put brackets in the following expression to get the largest value possible. What problem strategy did you use?

3 x (2.8) + (6.4 ÷ 4) = 10

3. Create a problem that could be solved using the following expression.

(2.5) + 1.25 + 5 x (1.6) = 11.75

Test corrections: question # 7

Question # 7:

From the origin, where would you move to plot the ordered (4, 0)?

A. up 4 units C. left 4 units

B. right 4 units D. down 4 units

Answer: B. right 4 units