# Mathematics decks

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**Tim Bottman**on Nov 04, 2014This flashcard deck helps reinforce the concepts of halves (1/2) and quarters (1/4).

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**Tim Bottman**on Nov 04, 2014Are these greater or less than statements true or false. Uses the numbers 0 through 18.

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**Tim Bottman**on Mar 11, 2014This set of facts includes all the turn-around facts for the doubles + 1. Students should use their knowledge of addition and fact families to solve these facts. For example, when solving 11 - 6, the student should ask, “What plus 6 equals 11?”.

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**Tim Bottman**on Mar 11, 2014This set of facts includes all the turn‐around facts for the helping facts. Students should use their knowledge of multiplication and fact families to solve these facts.

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**Tim Bottman**on Mar 11, 2014This set of facts includes all the turn‐around facts for the ones and zeros facts. Students should use their knowledge of multiplication and fact families to solve these facts.

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**Tim Bottman**on Mar 11, 2014The first set of multiplication facts that should be learned are the 2’s facts. Facts that have 2 as a factor are equivalent to the addition doubles (e.g., 2 x 6 is equivalent to 6 + 6) and should already be known by students who know their addition facts.

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**Tim Bottman**on Mar 11, 2014This level includes a review of all subtraction facts plus 6 facts that have not been covered by any strategies.

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**Tim Bottman**on Mar 11, 2014Thirty‐six facts have at least one factor that is either 0 or 1. These facts, though apparently easy, tend to get confused with “rules” that some children learned for addition. Above all else, avoid rules that sound arbitrary and without reason such as “Any number multiplied by zero is zero”.