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2. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Elementary arithmetic is a branch of mathematics involving addition, subtraction, multiplication, and division. Due to its low level of abstraction, broad range of application, and position as the foundation of all mathematics, elementary arithmetic is generally the first branch of mathematics taught in schools. [1] [2]

3. Saxon math - Wikipedia

   en.wikipedia.org/wiki/Saxon_math

   That initiative, which has been adopted by most U.S. states, is an important factor in determining which curricula are used in public schools in those states. However, Saxon Math continues to be popular among private schools and homeschoolers, many of whom favor its more traditional approach to teaching math. [5]

4. Math Blaster for 1st Grade - Wikipedia

   en.wikipedia.org/wiki/Math_Blaster_for_1st_Grade

   Math Blaster for 1st Grade is a 1999 educational video game in a line of educational products originally created by Davidson & Associates and continued by Knowledge Adventure. The game was re-released in 2000 as Math Blaster Mission 2 .

5. Exercise (mathematics) - Wikipedia

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

   At the Russian School of Mathematics, students begin multi-step problems as early as the first grade, learning to build on previous results to progress towards the solution. In the 1960s, collections of mathematical exercises were translated from Russian and published by W. H. Freeman and Company : The USSR Olympiad Problem Book (1962), [ 8 ...

6. Word problem (mathematics education) - Wikipedia

   en.wikipedia.org/wiki/Word_problem_(mathematics...

   The first example is accessible to primary school students, and may be used to teach the concept of subtraction. The second example can only be solved using geometric knowledge, specifically that of the formula for the volume of a cylinder with a given radius and height , and requires an understanding of the concept of " rate ".

7. Subtraction - Wikipedia

   en.wikipedia.org/wiki/Subtraction

   In a sense, subtraction is the inverse of addition. That is, c = a − b if and only if c + b = a. In words: the difference of two numbers is the number that gives the first one when added to the second one. Subtraction follows several important patterns. It is anticommutative, meaning that changing the order changes the sign of the answer.