## ALGEBRA for Middle Grades

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*ALGEBRA for Middle Grades*.The number of correct answers %%SCORE%%.

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A | A Hint: Ассоциативное свойство умножения |

B | B Hint: Коммутативное свойство умножения |

C | C Hint: Распределительное свойство умножения над добавлением |

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Question 17 |

A | A Hint: In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x ^{−1}, is a number which when multiplied by x yields the multiplicative identity, 1. |

B | B Hint: The multiplicative inverse of a fraction a/b is b/a. |

C | C Hint: For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4. |

D | D Hint: The reciprocal function, the function f(x) that maps x to 1/x, is one of the simplest examples of a function which is its own inverse (an involution). |

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