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Multiplication. Salgado. 3. Example: 3 x 4 = 12. Vocabulary. Product The answer to a multiplication problem . (producto) Factor A number that is multiplied by another number to find a product . (factor) Ex: 4 x 6 = 24, 4 and 6 are factors of 24
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Multiplication Salgado
3 Example:3 x 4 = 12 Vocabulary • Product The answer to a multiplication problem.(producto) • FactorA number that is multiplied by another number to find a product. (factor)Ex: 4 x 6 = 24, 4 and 6 are factors of 24 • Multiply - The act of finding the total number of items in a given number of groups when each group contains the same number of items. It is a short cut for addition. (multiplicar) • ArrayAn arrangement that shows objects in rows and columns. (matriz) 4
Vocabulary continued • Set -a group of items.(conjunto) • Times- to multiply.(por) • Multiple-the product of a whole number and any other number Ex: the multiples of 3 are 3, 6, 9, 12, 15.(multiple)
What multiplication number sentence can we use to represent this set of squares? 6 x 4 ------- 6 and 4 are the factors in this problem 24 product What word can we use to describe the arrangement of this set?
Practice Find the product. 12 22 31 42 x 3x 4x 4x 3 • Demonstration http://www.dositey.com/muldiv/mul1ml1.htm • Practice http://www.dositey.com/muldiv/mul1ss5.htm 36 88 124 126
Multiplication with regrouping 12 x 8 -------
Multiplythe numbers in the ones place. 1 1 2 x 8 ------- Put the 6 in the ones place of the product. Regroup the 1 to the tens place. 6
Multiplythe tens place in the top number by the ones place in the bottom number. Then you take this number and add the 1. Put that answer in the tens place of the product. 1 1 2 x 8 ------- 9 6
Practice Find the product. 29 12 26 25 x 3x 5x 5x 4 87 60 130 100 • Demonstration w/regrouping http://www.dositey.com/muldiv/mul1ss5.htm • Practice w/regrouping http://www.dositey.com/muldiv/mul1regss.htm
Review the vocabulary • Product • Multiplier • Multiply • Factor • Set • Array • Times
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