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  2. Paper towel - Wikipedia

    en.wikipedia.org/wiki/Paper_towel

    In Commonwealth English, paper towels for kitchen use are also known as kitchen rolls, kitchen paper, or kitchen towels. [2] For home use, paper towels are usually sold in a roll of perforated sheets, but some are sold in stacks of pre-cut and pre-folded layers for use in paper-towel dispensers .

  3. Grid method multiplication - Wikipedia

    en.wikipedia.org/wiki/Grid_method_multiplication

    The grid method (also known as the box method) of multiplication is an introductory approach to multi-digit multiplication calculations that involve numbers larger than ten. Because it is often taught in mathematics education at the level of primary school or elementary school , this algorithm is sometimes called the grammar school method.

  4. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    The basic algorithm, as best exemplified in a 22 multiplication problem, is as follows (where t represent a tens digit, u represent a units digit, and T symbolizes the tens digit multiplied by its respective power): Step 1 = (t 1 - u 1) • u 2 = A Step 2 = u 1 • t 2 = B Step 3 = (u 1 • u 2) + t (u 1 • u 2) = C

  5. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    The sum of two numbers is unique; there is only one correct answer for a sums. [8] When the sum of a pair of digits results in a two-digit number, the "tens" digit is referred to as the "carry digit". [9] In elementary arithmetic, students typically learn to add whole numbers and may also learn about topics such as negative numbers and fractions.

  6. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Multiplication can also be thought of as scaling. Here, 2 is being multiplied by 3 using scaling, giving 6 as a result. Animation for the multiplication 2 × 3 = 6 4 × 5 = 20. The large rectangle is made up of 20 squares, each 1 unit by 1 unit. Area of a cloth 4.5m × 2.5m = 11.25m 2; 4 ⁠ 1 / 2 ⁠ × 2 ⁠ 1 / 2 ⁠ = 11 ⁠ 1 / 4 ⁠

  7. A Cheaper Alternative to Tissues -- Savings Experiment - AOL

    www.aol.com/news/2012-02-03-savings-experiment...

    On average, a box of tissues has 65 sheets and breaks down to about 2 cents per sheet. However, a roll of toilet paper has nearly four times as many sheets as a box of tissues and costs half as much.

  8. 3 Ways to Fold Hand Towels Like a Hotel (Including Step-by ...

    www.aol.com/3-ways-fold-hand-towels-145400550.html

    3 ways to fold hand towels: Method 1: round fold. Lay a hand towel on a flat surface. (FYI, you can use any size towel for this method.) Take one corner and fold it away from you.

  9. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    For 8-bit integers the table of quarter squares will have 2 9 −1=511 entries (one entry for the full range 0..510 of possible sums, the differences using only the first 256 entries in range 0..255) or 2 9 −1=511 entries (using for negative differences the technique of 2-complements and 9-bit masking, which avoids testing the sign of ...

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