Different kinds of Fractions

There are 3 different kinds of fractions.

1. Proper -Where the top number (numerator) is less than the bottom number (denominator).

e.g. 4/7, 1/2, 9/15

2. Improper -Where the top number greater than the bottom number.

e.g. 6/3, 12/7, 4/3

3. Mixed -When there is a whole number with a proper fraction.

e.g. 1 and 1/2, 3 and 4/7, 5 and 8/12

Here's a video explaining Fractions!:

(It is kind of long so you may want to skip some parts that you don't need)

Expression definition

If you didn't understand Mr. Isfeld's explanation of the math term 'expression'. Try this link:

click here

Q: A group of students are talking, 2 friends leave the group. Write an expression for the number of students in the group after the 2 leave.

A: R-2

'R' meaning the number of students in the group.

'R' is a variable. I used a variable because the number of students in the group are unknown.

BEDMAS question for February 9, 2012

The answer for today's BEDMAS question is 0.

February 8, 2012 Lesson

The definitions learned today...

Variable -A letter that represents an unknown number.

e.g. A,D,M,Z,R

Expression -Any single number or variable, or combination of operations... (-, +, x, /) involving numbers and variables.

e.g. 5, n, 8t, x+1, 2y, -7

1+1=2 -Equation not expression

Value - A known or calculated amount

Constant -A number that does not change and it increases or decreases the value of the expression

Numerical Coefficient -A number that multiples the variable (or a number in front of a variable)

e.g. 2t

(2 being the numerical coefficent and 't' being the variable)

Adding and Subtracting fractions

1/3 + 2/4

1st step: find the L.C.M. (Lowest Common Multiple)

3- 6,9,12

4-8,12

12 is the L.C.M.

2nd step: make the L.C.M. the Denominator of both fractions. By multiplying the number from the top as the number from the bottom.

3rd step: add the renewed fractions together.

4/12 + 6/12= 10/12

4th step: simplify the fraction.

10/12 = 5/6

Denominator and Numerator

Denominator- the bottom number of a fraction and tells us how many equal parts the whole is divided into.

Numerator- is the top number of a fraction and tells us how many parts of the whole we have or are dealing with.

Ratio tables; Question 4

a) divide
by 10
b) divide by 2
divide by 2 again
c) divide
by 2
d) divide
by 4
then
multiply by 3

Write each repeating decimal number using bar notation

This question is in page 138 question 8.

You have to put a bar on top of the repeating decimals.

Repeating decimals are decimals that go on forever.

The red line is the bar notation.

Order Of Operations

4 multiplied by 3
12 divided by 2
12 add 6
18

http://mathcentral.uregina.ca/QQ/database/QQ.09.07/h/brit1.html