7-18

Variable - a unknown Number

1.) a + 6 = 10
2.) b - 8 = 5
3.) 7 = 3 + d
4.) 5g = 15
5.) 5 = s - 5
6.) 35 = 7k

Integers
Negative number 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 - (-4) = is a subtraction statement

Divisibility and factors

Divisibility rules

0-ends in zero

1-all numbers

2-even numbers

3-sum of the digits is 3

4-divisible by 2 twice

5-ends in a 0 or 5

6-divisible by 2 and 3

8-divisible by 2 thrice

9-sum of the digits is 9

10-ends in a zero

Divisible - Means when a number can be divided by another number, with no remainder or decimal.

Factors

Don't no a definition :'(

Example:

1,2,4,8,16,32

Math- Exams Practice

Quiz

What is "Translation"

a mirror image

a slide along a straight line

turn around a fixed point

none of the above
What does "Bisect" mean?

to cut in two

to cut in three

to cut

none of the above
Larger than the actual number is.....?

over estimate

under estimate

big estimate

none of the above
Base x height is?

circle

triangle

parallelogram

square
Greatest to least..?

descending order

ascending order

none of the above
What's a terminating decimal?

a decimal goes on forever but the digits are different

a decimal goes on forever

a decimal in which the digits stop

none of the above
What is a zero pair?

pair of integers representing +1 and -1

pair of integers representing -2 and +2

pair of integers representing +15 and -10

none of the above
What's diameter?

distance around a circle

distance across a circle through it's centre

distance from the centre of a circle to the edge

none of the above
How do you find circumference?

2πr

2d

all of the above

none of the above
Answer to a division question...?

sum

product

difference

quotient
A number can be divided by another with no remainder or decimal.

divisibility

non- divisibility

none of the above

all of the above
A table used to show how numbers are the same and different

ratio table

venn diagram

table of values

carroll diagram
One possible result of a probability experiment...?

outcome

favourable outcome

random

none of the above
Is BEDMAS- brackets, exponents, division, multiplication, addition, subtraction

no

yes

maybe
What is another name for coordinate grid?

graph

quadrats

cartesian plane

none of the above
What is LCD and GCF?

lowest common denominator & greatest common factor

least common denominator & greatest common factor

least common divider & greatest common flies

none of the above
A table showing 2 sets of related numbers

table of values

carroll diagram

ratio table

none of the above
What is with the variable?

constant

numerical coefficient

operation

none of the above
What is mean?

the one in the middle of the data set

the one mostly seen in the data set

add all the numbers up and divide by how many numbers there are
What is range?

greatest and lowest number added together

the greatest and lowest numbers in an arranged data set (greatest number - lowest number)

last number in a data set

Another Quiz by QuizMaker

Exam Review Notes

Transformations
Translation - slide along a straight line
Rotation - Turn about a fixed point
Reflection - Mirror image

(+,+) Quadrant I
(-,+) Quadrant II
(-,-) Quadrant III
(+,-) Quadrant IV

Experimental Probability - Actually doing the trial
Theoretical Probability - What you expect to happen

Divisible - Means when a number can be divided by another number with no remainder or decimal. A Whole Number

Divisibility Rules
0 - End in zero
1 - all numbers
2 - all even numbers
3 - sum of the digits is 3
4 - divisible by two twice
5 - ends in a zero or a five
6 - divisible by 2 and 3
8 - divisible by 2 quad
9 - sum of the digits is 9
10 - ends in zero

Circle Formulas
c = π d
A = π r²
c = d = 2r
c = 2 π r

Exam Review Part 2

Converting fractions, decimals, and percents

The first image shows the before, and the bottom shows the after. When converting fractions decimals and percents, you multiply the fraction by the denominator and once you get your decimal, you multiply it by 100 to get your percent. Here is why:

Decimal: Out of 1

Percents: Out of 100

Here are some other examples:

1/2 = 0.5, 50%
0.75= 3/4, 75%
80%= 4/5, 0.8

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Probability:

Probability means the chance of something happenin

This is one of the ways we can figure out a question like : P: heads and rolling a 4 with a regular die. We can use a Probability Tree.

Factors are multiples of a given number. For example, the factors of 32 include:

1, 2 , 4, 8, 16, and 32.

( 1 x 32 = 32 )

( 2 x 16 = 32 )

(4 x 8 = 32 )

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You can also use a Venn Diagram to help you figure out 2 different sets of factors and common factors. To find the factors of 30 and 36, you do this: