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  2. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    From the perspective of the bellhop, his assets are $2, and his liabilities are $3 to guests and $25 to the register at the desk ($30 = 2 + 3 + 25). To illustrate the issue through equations: 1) 10 + 10 + 10 = 30 2) 10 + 10 + 10 = 25 + 2 + 3

  3. Little Professor - Wikipedia

    en.wikipedia.org/wiki/Little_Professor

    Little Professor. Little Professor with accompanying booklet. The Little Professor is a backwards-functioning calculator designed for children ages 5 to 9. Instead of providing the answer to a mathematical expression entered by the user, it generates unsolved expressions and prompts the user for the answer. [1]

  4. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    Long division. In arithmetic, long division is a standard division algorithm suitable for dividing multi-digit Hindu-Arabic numerals ( Positional notation) that is simple enough to perform by hand. It breaks down a division problem into a series of easier steps.

  5. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    For example, to calculate 2 × 167: 2×7=14, so the final digit is 4, with a 1 carried and added to the 2×6 = 12 to give 13, so the next digit is 3 with a 1 carried and added to the 2×1=2 to give 3. Thus, the product is 334. Multiplying by 5. To multiply a number by 5, 1. First multiply that number by 10, then divide it by 2.

  6. Lowest common denominator - Wikipedia

    en.wikipedia.org/wiki/Lowest_common_denominator

    The lowest common denominator of a set of fractions is the lowest number that is a multiple of all the denominators: their lowest common multiple. The product of the denominators is always a common denominator, as in: but it is not always the lowest common denominator, as in: Here, 36 is the least common multiple of 12 and 18.

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Psychological pricing - Wikipedia

    en.wikipedia.org/wiki/Psychological_pricing

    Psychological pricing (also price ending or charm pricing) is a pricing and marketing strategy based on the theory that certain prices have a psychological impact. In this pricing method, retail prices are often expressed as just-below numbers: numbers that are just a little less than a round number, e.g. $19.99 or £2.98. [1]

  9. Vitamix recalls almost 570,000 blender parts - AOL

    www.aol.com/vitamix-recalls-almost-570-000...

    The pricey blenders were sold at Costco, Best Buy, Crate & Barrel, Macy’s, Target, Williams Sonoma, Walmart and specialty stores from April 2017 through May 2024. Amazon, Vitamix and QVC also ...