here is a link to help you with measures of central tendency!
also, here's a video to help you understand more!
Tuesday, June 14, 2011
Divisibility Rules!
Divisibility is when a nnumber can be divided by another with no remainder or decimal.
2-
All even numbers, numbers that end in 0,2,4,6,8.
5-
All numbers that end in 0 or 5.
10
All numbers that end in 0.
Quotient - The answer to a divisibility question.
e.g. 12 divided by 2 is 6
6 is the quatient.
3-
The sum of all the digits must equal a multiple of 3.
e.g. 98 123 187
9 + 3 = 12 1 + 2 + 3 = 6 4 + 8 + 7 = 19
1 + 2 = 3 1 + 9 = 10
1 + 0 = 1
1378
1 + 3 + 6 + 8 = 19
1 + 9 = 10
1 + 0 = 1
45728163
4 + 5 + 7 + 2 + 8 + 1 + 6 + 3 = 36
3 + 6 = 9
6-
Any number that is divisible by 2 and 3.
9-
The sum of all the digits must equal 9.
e.g. 18 225 623781
1 + 8 = 9 2 + 2 + 5 = 9 6 + 2 + 3 + 7 + 8 + 1 = 27
2 + 7 = 9
Watch the video!
Sorry it's very late. :(
2-
All even numbers, numbers that end in 0,2,4,6,8.
5-
All numbers that end in 0 or 5.
10
All numbers that end in 0.
Quotient - The answer to a divisibility question.
e.g. 12 divided by 2 is 6
6 is the quatient.
3-
The sum of all the digits must equal a multiple of 3.
e.g. 98 123 187
9 + 3 = 12 1 + 2 + 3 = 6 4 + 8 + 7 = 19
1 + 2 = 3 1 + 9 = 10
1 + 0 = 1
1378
1 + 3 + 6 + 8 = 19
1 + 9 = 10
1 + 0 = 1
45728163
4 + 5 + 7 + 2 + 8 + 1 + 6 + 3 = 36
3 + 6 = 9
6-
Any number that is divisible by 2 and 3.
9-
The sum of all the digits must equal 9.
e.g. 18 225 623781
1 + 8 = 9 2 + 2 + 5 = 9 6 + 2 + 3 + 7 + 8 + 1 = 27
2 + 7 = 9
Watch the video!
Sorry it's very late. :(
Math: Exam Review
A spread sheet organizes date in columns and rows.
Know the ratio of circumference to diameter of any circle is always the same.
Circumference divided by diameter is pi, 3.14
~**~**~**~ Next Slide~
Circle Formulas
c = π d
c = 2 π r
d = 2r
A = π r²
Are is the measure of space, a two dimensional shape covers
~**~**~**~ Next Slide~
Sectors of circle graphs are made from central angles.
If the sector covers 25% of the graph the central angle is 25% of 360° which is 90° (0.25 x 360)
~**~**~**~ Next Slide~
Integers
negative numbers represent values below zero and positive numbers represent values above zero.
eg. above and below ground or sea level
1+ (-2) = (-1) is an addition statement
3 - (-1) = 4 is an subtraction statement
~**~**~**~ Next Slide~
Opposite integers have the same numeral but a different sign e.g 3 and (-3)
Know what a
(+) + (+) =
(-) + (-) =
(+) + (-) =
(-) + (+) =
(+) - (+) =
(-) - (-) =
(+) - (-) =
(-) - (+) =
Practice with different numerals in each situation
Know the ratio of circumference to diameter of any circle is always the same.
Circumference divided by diameter is pi, 3.14
~**~**~**~ Next Slide~
Circle Formulas
c = π d
c = 2 π r
d = 2r
A = π r²
Are is the measure of space, a two dimensional shape covers
~**~**~**~ Next Slide~
Sectors of circle graphs are made from central angles.
If the sector covers 25% of the graph the central angle is 25% of 360° which is 90° (0.25 x 360)
~**~**~**~ Next Slide~
Integers
negative numbers represent values below zero and positive numbers represent values above zero.
eg. above and below ground or sea level
1+ (-2) = (-1) is an addition statement
3 - (-1) = 4 is an subtraction statement
~**~**~**~ Next Slide~
Opposite integers have the same numeral but a different sign e.g 3 and (-3)
Know what a
(+) + (+) =
(-) + (-) =
(+) + (-) =
(-) + (+) =
(+) - (+) =
(-) - (-) =
(+) - (-) =
(-) - (+) =
Practice with different numerals in each situation
math review
on page one of the math review we talk about movments of a shape on a coorardinate grid which are transformation- a movement only going up,down,left and right
translation- to slide an image on a striaght line rotation- turn about a fixed point
reflection-to mirror an image.
tranfomation
translation
rotation
reflection
translation- to slide an image on a striaght line rotation- turn about a fixed point
reflection-to mirror an image.
tranfomationtranslationrotationreflection
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