Maths Study Notes → Number
Study notes → Number
Today in mathematics, we are auditioning how to improve our classifications by developing study notes apropos to NUMBER.
Multiples: Multiples are found by multiplying the number and any integer. For specimens, multiples of the number 6 are: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60.]
Factors: A number that can divide and multiply by itself but can als be numbers that contribute to a result.
Prime number: A number that can only be divided by itself.
Highest common factor (HCF): A number that both values allotment.
Lowest common multiple (LCM): Lowest multiple of a number
Order of operation:
Bedmas
Exponents
Division
Multiples
Addition
Subtraction
Rounding:
Rule:→Left to right (5+) (4-)
Examples:
645 → 640
7.39 → 7.4
Standard form:
Rule: Number MUST be between 1-9 x 10 and depending on the amount of time you move the decimal point that id the power.
Examples:
39000 → 3.9000 x 10 (power 5)
0.00045 → 4.5 x 10 (-4)
Converting fractions into decimals:
Rule: Divide the numerator by the denominator.
Example:
⁴/₅ as a decimal is 4 ÷ 5 = 0.8
Percentage of mean:
Rule: Divide or times by the value.
⅗ of 400 = (400 ÷ 5 = 80) (80 x 3 = 240)
10% of 600 = (600 ÷ 10 = 60)
Ratio
Rule:
Example:
Share $60 into 2:3
Step 1: Faction > 2:5 (2 + 3)
Step 2: ⅖ of 60 (60 ÷ 5 x 2 = 24)
Step 3: ⅗ of 60 (60 ÷ 5 x 3 = 36)
Step 4: New Ratio 24:36
Labels: Maths
posted by Maya Griffiths @ 12:35
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