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  2. Parents are stumped over first graderโ€™s math question - can ...

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    The problem required the student to split the number 27 into tens and ones and then just into ones. ... Rathbone’s daughter, Lilly-Mo, was asked on the worksheet to pick the odd item out based ...

  3. Base ten blocks - Wikipedia

    en.wikipedia.org/wiki/Base_ten_blocks

    Wooden Dienes blocks in units of 1, 10, 100 and 1000 Plastic Dienes blocks in use. Base ten blocks, also known as Dienes blocks after popularizer Zoltán Dienes (Hungarian: [หˆdijษ›nษ›สƒ]), are a mathematical manipulative used by students to practice counting and elementary arithmetic and develop number sense in the context of the decimal place-value system as a more concrete and direct ...

  4. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    To easily multiply any 2-digit numbers together a simple algorithm is as follows (where a is the tens digit of the first number, b is the ones digit of the first number, c is the tens digit of the second number and d is the ones digit of the second number):

  5. Triangular number - Wikipedia

    en.wikipedia.org/wiki/Triangular_number

    A square whose side length is a triangular number can be partitioned into squares and half-squares whose areas add to cubes. This shows that the square of the n th triangular number is equal to the sum of the first n cube numbers. Also, the square of the n th triangular number is the same as the sum of the cubes of the integers 1 to n.

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    Top Prescription Weight Loss Pills. Anti-obesity medications (AOMs) date back to the 1940s — well before modern regulations from the FDA (U.S. Food and Drug Administration) (FDA) were in place ...

  7. Netanyahu's prostate removal surgery was a success ... - AOL

    www.aol.com/israels-netanyahu-undergo-prostate...

    Israeli Prime Minister Benjamin Netanyahu successfully underwent surgery to have his prostate removed, hospital officials said Sunday. The 75-year-old leader, who has had a series of health issues ...

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