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

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Order of operation: 

Bedmas

Exponents 

Division 

Multiples 

Addition 

Subtraction 

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Rounding: 

Rule:→Left to right (5+) (4-)

Examples:

645 → 640

7.39 → 7.4

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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)

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Converting fractions into decimals: 

Rule: Divide the numerator by the denominator.

Example: 

⁴/₅ as a decimal is 4 ÷ 5 = 0.8

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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)

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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