... Q15. Let N be the greatest number that will divide
1305, 4665 and 6905, leaving the same remainder in
each case. Then sum of the digits in N is
... † This text is available under the Creative Commons Attribution/Share-Alike License 3.0.
You can reuse this document or portions thereof only if you do so under terms that are
compatible with the CC-BY-SA license.
File - I NEED HELP WITH MATH!
... Find the difference of 2 and 5. Use counters.
1. Write the subtraction expression 2 – 5.
2. To subtract integers, add the opposite. Write the addition
expression 2 + (-5). This is the new expression.
3. Use 2 positive (yellow) counters to represent the first
Division of Decimals by Decimals
... not a decimal but a whole number. In other words move the decimal
point two places to the right in both the divisor and dividend
Location arithmetic (Latin arithmeticæ localis) is the additive (non-positional) binary numeral systems, which John Napier explored as a computation technique in his treatise Rabdology (1617), both symbolically and on a chessboard-like grid.Napier's terminology, derived from using the positions of counters on the board to represent numbers, is potentially misleading in current vocabulary because the numbering system is non-positional.During Napier's time, most of the computations were made on boards with tally-marks or jetons. So, unlike it may be seen by modern reader, his goal was not to use moves of counters on a board to multiply, divide and find square roots, but rather to find a way to compute symbolically.However, when reproduced on the board, this new technique did not require mental trial-and-error computations nor complex carry memorization (unlike base 10 computations). He was so pleased by his discovery that he said in his preface ... it might be well described as more of a lark than a labor, for it carries out addition, subtraction, multiplication, division and the extraction of square roots purely by moving counters from place to place.