Today in Mathematics, we are making study notes on numbers for our topic test on Friday. So I went to my maths site and here we are going to assign what the notes are.
Study Notes:
1) Number
Multiples: The meaning of a multiple is the product result of
one number multiplied by another number.
Example → 3, 6, 9, 12, 18 ...
Factors: A factor is a number that is able to divide a number
completely without leaving any numbers remaining.
Example → 3 and 6 are factors of 12 because 12 ÷ 3 = 4 exactly and 12 ÷ 6 = 2 exactly.
The other factors of 12 are 1, 2, 4, and 12.
Prime Number: Prime numbers are numbers that have
only 2 factors: 1 and themselves.
Example→ Prime numbers are 2, 3, 5, 7, and 11.
HCF (Highest Common Factor): The largest whole number, which is
shared by multiple numbers.
Example → The highest common factor between 8 and 12 is 4.
LCM (Lowest Common Multiple): The lowest common multiple between two numbers.
Example →The lowest common multiple between 3 and 4 is 12
2) Order Of Operations
B: Brackets
E: Exponents
D: Division
M: Multiple
A: Addition
S: Subtraction
Example → (5x6) x 1² ÷3 - 8 + 4
30 x 1² ÷3 - 8 + 4 =
30 x 1÷3 - 8 + 4 =
30 ÷ 3 - 8 + 4 =
10 - 8 + 4 =
2 + 4 =
Answer: 6
3) Rounding
Meaning: Rounding implies simplifying a number yet keeping its worth near what it was. The outcome is less exact.
DP = Decimal Point
6.35719 to 2dp ... '5' is higher therefore we round it up to the nearest 10 which means the answer is 6.40
4) Standard Form
Meaning: Standard form allows us to write numbers without using as many digits.
Examples →
5432 = 5.432 x 10 ³
14 500 = 1.45 x 10 ⁴
0.00045 = 4.5 x 10 -⁴
