711-2011: gnicholas

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Thursday, June 14, 2012

Variable
A variable is a unknown number
A express contains variables, numbers and operations in any order

The three Transformations
Translation- slide along a straight line
Rotation- Turn about a fixed point
Reflection- Just a mirror image

Divisible means when a number can be divided by another number it has to be a whole number

Divisibility rule for 9
The rule for 9 is if it has a sum of 9 you got it

Divisibility rules 6 & 8
The rule for 6 is it has to be divisible by 2 & 3
The rule for 8 is it has to be divided by 2 three times

Divisibility rules 4 & 5
The rule for 4 is divide the number by 2 twice with no remainders
Rule for 5 is if it ends with 0 or 5

Divisibility rules for 2 & 3

All number that end in a even number is for 2
All numbers that are in the group of 3 is for 3

First do brackets exponents then divide,multiply then add and subtract all steps left to right

2+3x4-5
2+12-5

14-5

Anwser 9

First do brackets then exponents divide, multiply then add and subtract left to right for all steps.

5x(2+3)+8÷4

5x5+8÷4

25+8÷4

33÷4

Answer 8.25

(7+3)÷5(9-8)

10÷5(9-8)
10÷5 1
2x1

Anwser 2

2+3x4-5
2+12-5
14-5
Answer 9

2
27x5+3
27x5+9
135+9
Answer 144

Question 5
Write each addition statement shown by the fractions.
Estimate the answer,and then add.

2 2 4
- + - = -
6 6 6

Question 20
4567.892
Improper fraction top greater than bottom
Denominator- bottom number
Numerator- top number
8
-
4

12÷10+4x9-2=44.8
12÷10+(4x9)-2=35.2
Brackets can change the question and answer.

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