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2. Dyscalculia - Wikipedia

   en.wikipedia.org/wiki/Dyscalculia

   Most adults with dyscalculia have a hard time processing math at a 4th-grade level. For 1st–4th grade level, many adults will know what to do for the math problem, but they will often get them wrong because of "careless errors", although they are not careless when it comes to the problem. The adults cannot process their errors on the math ...

3. Noetic Learning math contest - Wikipedia

   en.wikipedia.org/wiki/Noetic_Learning_Math_Contest

   National Honor Roll: Awarded to the top 10% of participants in each grade category. Honorable Mention: Awarded to students who score in the top 50% of participants in their grade category. [20] [18] School teams can earn the following award: Team Achievement: The top 10% of teams in each grade. [6] [21]

4. Four fours - Wikipedia

   en.wikipedia.org/wiki/Four_fours

   For example, when d=4, the hash table for two occurrences of d would contain the key-value pair 8 and 4+4, and the one for three occurrences, the key-value pair 2 and (4+4)/4 (strings shown in bold). The task is then reduced to recursively computing these hash tables for increasing n , starting from n=1 and continuing up to e.g. n=4.

5. 10 Hard Math Problems That Even the Smartest People in the ...

   www.aol.com/10-hard-math-problems-even-150000090...

   Even numbers are always 0, 2, or 4 more than a multiple of 6, while odd numbers are always 1, 3, or 5 more than a multiple of 6. Well, one of those three possibilities for odd numbers causes an issue.

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

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

   Investigations was developed between 1990 and 1998. It was just one of a number of reform mathematics curricula initially funded by a National Science Foundation grant. The goals of the project raised opposition to the curriculum from critics (both parents and mathematics teachers) who objected to the emphasis on conceptual learning instead of instruction in more recognized specific methods ...

7. Mixed numbers - Wikipedia

   en.wikipedia.org/?title=Mixed_numbers&redirect=no

   This page was last edited on 23 June 2020, at 13:37 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

8. Mental calculation - Wikipedia

   en.wikipedia.org/wiki/Mental_calculation

   For example, the number 45 in scientific notation is 4.5 × 10 1, but one will call it a × 10 b. Next, find the logarithm of a, which is between 1 and 10. Start by finding the logarithm of 4, which is .60, and then the logarithm of 5, which is .70 because 4.5 is between these two.

9. Arithmetic progression game - Wikipedia

   en.wikipedia.org/wiki/Arithmetic_progression_game

   The arithmetic progression game is a positional game where two players alternately pick numbers, trying to occupy a complete arithmetic progression of a given size. The game is parameterized by two integers n > k. The game-board is the set {1,...,n}. The winning-sets are all the arithmetic progressions of length k.