Page 139 Question #22

22) Use a calculator to figure out the answers:

1
7

2
7

There is more but the numerator is just changing.. nothing really special. So here are the answers :

1
7 = 0.142857142857142857142857142857

2

7 = 0.285714285714285714285714285714

TOO HARD 4 YA? I KNOW, IT IS FOR ME TOO (hehe)! So rather than just doing all those number all over, just put a line on top of the numbers being repeated.

E.g. : 0.285714285714285714285714285714

**_____Which one is better?
o.285714

HOW DO YOU THEM APPLES, BISHOPS!!
}<> FISHY!!

-CptPrice

how to answer the question

According to an article in the newspaper, 35% of Regina residents like winter. If the population of Regina is 178 000, how many people like winter? Show two different ways to find the answer

Steps:

1.First start from 100%, because percentage is out of 100.

2.Second Divide or Multiply to get to the percentage asked.

3.Finally what ever you do on the right side do the same on the left side.

Another way to get the answer from the question:

Steps:

1.First you have to change your percentage asked to a decimal.

2.Then you Multiply it to the number mentioned at the population.

3.Then you get the answer.

A video about ratio tables:

A link about ratio tables click here

Textbook pg 137 #5

Question number 5 tells us to: use a calculator to change fraction to decimal. Round to place value indicated.

First you look at the fraction. Then on your calculator you put the number of the numerator and then press the divide sign, then you put the number of the denominator. When you press the equal button it will give you a number. Then you round it to the place value that the text book gives you.

Bar Notation

TEXTBOOK- page 138

no. 9

Bar Notations

How to do it - You put a bar on the top of the number if the answer is a repeating number or if the number goes on and on.

Converting Fractions to Decimals

Steps to convert fractions to decimals.

1. Divided the denominator to itself.

now the denominator is one.

2. Now you divided the denominator to the

numerator. Now you have a decimal over one.

3. Finally round it off to the place value indicated.

Also Here is a picture of the place values we are going

to use.

These are the place values

we are going to use for the

questions below. Also we will

be using ten thousandths just for

rounding off.

5.Use a calculator to change each fraction to

a decimal number. Round to the place

value indicated.

p.g 137 in MathLinks 7

Number 5 questions.

a) round to the nearest tenth e.g 0.1, 0.2 , 03 .etc

<-As you see I followed all the steps

the 0.5/1 was supposed to be 0.52/1.

remember below 5 stays, over 5 five

goes up. 2 in the hundredths place is below

5. So 0.5 stays as 0.5.

b) Round it off to the nearest hundredth e.g 0.10, 0.20, 0.25 .etc

<-As you Again I followed all the steps.

this picture is already rounded off.

The real numbers were 0.49767442.

The numbers you have to look at to round

off the decimal is 0.497 remember below 5 stays

over 5 five goes up. 7 is above 5 so the

hundredths place goes up by one.

That's why it's 0.50/1.

c)Round it off to the nearest tenth e.g 0.1, 0.2 , 03 .etc

<-Once again I followed all the steps.

This picture is once again rounded off

already. The real numbers were 0.86.

6 is above 5 so 8 goes up by one. I guess you

know the rules for rounding off

below 5 stays and above 5 goes up.

d)Round it off to the nearest thousandth e.g 0.123, 0.234, 0.345, 0.543. etc

<- Finally! The last one. As you see I followed all the

steps. This picture is already rounded off. The original

number of 0.682/1 was 0.6816609. I look at the ten

thousandths place it was the number 6. 6 is above 5 so

the thousandths place goes up by one.

I hope you guys learned Something!

Things I used:

Calculator

Paint

Math Notes

My Head

The Computer.

Here's a link to learn more.

Click here

Also you can play this

Game converting fractions

to decimals.

Read Instructions First before playing

Click Here

Also don't be afraid on making mistakes.

Mistakes help you learn something new.

"A person who never made a mistake never tried anything new."

-Albert Einstein (1879-1955)

Using Bar Notation.

Question 8, Pg. 138.

You only use Bar Notation if the decimal repeats and goes on forever.

As you see in Part C it is 0.1877777..., you wouldn't use the Bar Notation on the whole decimal [0.187] you would only use it over the 7 because that's the only number that repeats.

Converting fractions to decimals