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  2. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    Scientists often record time as decimal. For example, decimal days divide the day into 10 equal parts, and decimal years divide the year into 10 equal parts. Decimals are easier to plot than both (a) minutes and seconds, which uses the sexagesimal numbering system, (b) hours, months and days, which has irregular month lengths.

  3. Division (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Division_(mathematics)

    This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is the quotient. Unlike the other basic operations, when dividing natural numbers there is sometimes a remainder that will not go evenly into the dividend; for example, 10 / 3 leaves a remainder of 1, as 10 is not a multiple of 3.

  4. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    3 3 = 27 down 1; 4 3 = 64 down 3; 5 3 = 125 up 1; 6 3 = 216 up 1; 7 3 = 343 down 3; 8 3 = 512 down 1; 9 3 = 729 down 3; 10 3 = 1000 up 1; There are two steps to extracting the cube root from the cube of a two-digit number. For example, extracting the cube root of 29791. Determine the one's place (units) of the two-digit number. Since the cube ...

  5. Maths Mansion - Wikipedia

    en.wikipedia.org/wiki/Maths_Mansion

    1: 21 "The Return of the Great Big Hen" Mental division by multiples of 10 2: 22 "Hundredths and Thousandths" Ordering mixed sets of numbers 3: 23 "Make and Break: Part 1" Multiples and grid pattern multiplication 4: 24 "Make and Break: Part 2" Factors and prime numbers 5: 25 "Do Same to the Bottom as the Top" Equivalent fractions 6: 26 "More ...

  6. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    127 ÷ 4 = 31.75 124 30 (bring down 0; decimal to quotient) 28 (7 × 4 = 28) 20 (an additional zero is added) 20 (5 × 4 = 20) 0 In Mexico , the English-speaking world notation is used, except that only the result of the subtraction is annotated and the calculation is done mentally, as shown below:

  7. 5 ways to tell if you’re on track for retirement — and 5 ...

    www.aol.com/finance/5-ways-tell-track-retirement...

    For example, if you plan to spend $50,000 a year, you’ll need about $1.25 million to make it a reality. The Rule of 25 is based on the idea that withdrawing 4 percent annually from your ...

  8. “Jersey Shore” Stars Reveal How Their Kids Reacted to Clips ...

    www.aol.com/jersey-shore-stars-reveal-kids...

    Jenni "JWoww" Farley and Nicole "Snooki" Polizzi spoke to PEOPLE about their kids seeing some of their wild times on reality TV at the Nov. 8 premiere of the film 'Devon' MTV The cast of 'Jersey ...

  9. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    For example, to change ⁠ 1 / 4 ⁠ to a decimal, divide 1.00 by 4 (" 4 into 1.00 "), to obtain 0.25. To change ⁠ 1 / 3 ⁠ to a decimal, divide 1.000... by 3 (" 3 into 1.000... "), and stop when the desired accuracy is obtained, e.g., at 4 decimals with 0.3333. The fraction ⁠ 1 / 4 ⁠ can be written exactly with two decimal digits, while ...

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