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  2. Division (mathematics) - Wikipedia

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

    If the divisor has a fractional part, one can restate the problem by moving the decimal to the right in both numbers until the divisor has no fraction, which can make the problem easier to solve (e.g., 10/2.5 = 100/25 = 4). Division can be calculated with an abacus. [14] Logarithm tables can be used to divide two numbers, by subtracting the two ...

  3. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    If necessary, simplify the long division problem by moving the decimals of the divisor and dividend by the same number of decimal places, to the right (or to the left), so that the decimal of the divisor is to the right of the last digit. When doing long division, keep the numbers lined up straight from top to bottom under the tableau.

  4. Investigations in Numbers, Data, and Space - Wikipedia

    en.wikipedia.org/wiki/Investigations_in_Numbers...

    The addition of decimals is related to students' work with whole number addition, with attention paid to place values so that students understand the reasoning behind lining up decimal points. Students are not instructed to compute an average by "adding up the items, and dividing by the number of items" because it is judged to be too complex ...

  5. Math Blaster! - Wikipedia

    en.wikipedia.org/wiki/Math_Blaster!

    An arcade-style educational game that offers skill-building mathematical exercises, the title contains minigames that test players' knowledge in subjects such as addition, subtraction, multiplication, division, fractions, percentages, and decimals. A series of mathematics problems appear on the screen, and the player must move to fire the ...

  6. Principles and Standards for School Mathematics - Wikipedia

    en.wikipedia.org/wiki/Principles_and_Standards...

    The Principles and Standards for School Mathematics was developed by the NCTM. The NCTM's stated intent was to improve mathematics education. The contents were based on surveys of existing curriculum materials, curricula and policies from many countries, educational research publications, and government agencies such as the U.S. National Science Foundation. [3]

  7. Math Blaster Episode I: In Search of Spot - Wikipedia

    en.wikipedia.org/wiki/Math_Blaster_Episode_I:_In...

    The user must identify the pattern to find the missing number (for example, if the problem presented is "5, 10, 15, _, 25", then the missing number is 20). Estimation - the user must round numbers to estimate the answer. Fractions/decimals/percents - the user must solve problems that involve fractions, decimals and percentages.

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