Unit 4: Division Key Vocabulary Everyday Mathematics.

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Presentation transcript:

Unit 4: Division Key Vocabulary Everyday Mathematics

4.1 Division Facts and Extensions Objective: To review division facts and to extend division facts; and to mentally divide 2-digit numbers by 1-digit numbers

4.2 The Partial-Quotients Division Algorithm Objective: To review and practice the partial- quotients division algorithm for dividing a whole number by a whole number

Dividend In a division problem, this is the number being divided / 7 Dividend

Divisor In a division problem, this is the number that the dividend is being divided by / 7 Divisor

Quotient In a division problem, the quotient is the solution or answer = / 7 = 18 Quotient

Remainder In a division problem, any leftover amount that is not divided equally is the remainder R 1 Remainder

4.3 American Tour: Finding Distances on a Map Objective: to estimate distances using a map scale

Map Legend / Map Key A map legend or map key explains the symbols, colors, or markings on the map. One of the first places to look when examining a map.

Direction Symbol Locates north, south, east, and west on a map. If there is no direction symbol, the top of the map is usually understood to be north.

Map Scale The map scale compares distances on a map with real distances. The scale can be a ruler-like diagram or words and symbols. – 1 inch represents 100 miles – 1 in. = 100 mi.

Map Legend Map Scale

4.4 Division of Decimal Numbers Objective: to make a magnitude estimate for quotients; to use the partial-quotients division algorithm to divide decimals by whole numbers

Magnitude Estimate A rough estimate of the size of the number Use friendly numbers to make a quick guess Is the answer in the ones? tens? hundreds? thousands?

4.5 Interpreting the Remainder Objective: to solve division number stories and interpret remainders within the context of stories.

Variable A letter used to represent a number 12 x = 4 x = 3 Variable

4.6 Skills Review with First to 100 Objective: to investigate using a variable to represent a range of values; and to review a variety of mathematical skills