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  2. Metrication in Guatemala - Wikipedia

    en.wikipedia.org/wiki/Metrication_in_Guatemala

    One square vara equals 0.6987 square meters (7.521 sq ft), while one manzana equals 6,987 square metres (1.727 acres). [2] The term cuerda can refer to areas of different sizes. Cuerdas can refer to areas that are 50 x 50, 40 x 40, 30 x 30, 25 x 25 or 20 x 20 varas (i.e. 2500, 1600, 900, 625, or 400 square varas). [3]

  3. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    D0 20 is equivalent to two hundred and sixty in decimal = (13 × 20 1) + (0 × 20 0) 100 20 is equivalent to four hundred in decimal = (1 × 20 2) + (0 × 20 1) + (0 × 20 0). In the rest of this article below, numbers are expressed in decimal notation, unless specified otherwise. For example, 10 means ten, 20 means twenty. Numbers in vigesimal ...

  4. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    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. 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 ⁠

  5. 40th parallel north - Wikipedia

    en.wikipedia.org/wiki/40th_parallel_north

    Ohio Stadium, one of the largest stadiums in the world, barely misses the parallel 40° north (6 seconds or 185 metres (607 ft) above 40° north). Baseline Road in Boulder, Colorado, traces the parallel 40° north. Thistle, Utah, a ghost town since 1983, is slightly (30 seconds or 956 metres (0.594 mi)) below 40° north.

  6. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    Dividing 272 and 8, starting with the hundreds digit, 2 is not divisible by 8. Add 20 and 7 to get 27. The largest number that the divisor of 8 can be multiplied by without exceeding 27 is 3, so it is written under the tens column. Subtracting 24 (the product of 3 and 8) from 27 gives 3 as the remainder.

  7. List of logarithmic identities - Wikipedia

    en.wikipedia.org/wiki/List_of_logarithmic_identities

    which characterizes the behavior of harmonic numbers as they grow large. This approximation (which precisely equals ⁡ (+) in the limit) reflects how summation over increasing segments of the harmonic series exhibits integral properties, giving insight into the interplay between discrete and continuous analysis. It also illustrates how ...

  8. How To Use the 40-30-20-10 Rule To Boost Your Savings - AOL

    www.aol.com/finance/40-30-20-10-rule-132128722.html

    One of the most popular is the 40-30-20-10 rule. While the rule... If you are struggling with budgeting and saving, there are a number of methods you can use to help you meet your financial goals ...

  9. Square number - Wikipedia

    en.wikipedia.org/wiki/Square_number

    For example, 9 is a square number, since it equals 3 2 and can be written as 3 × 3. The usual notation for the square of a number n is not the product n × n, but the equivalent exponentiation n 2, usually pronounced as "n squared". The name square number comes from the name of the shape.