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Math G4 U4 L2

Math 4th Grade Unit 4 Lesson 2

Factor the numbers multiplied together to find a product. Example 3 x 6 = 18
Product The answer to a multiplication problem.
Commutative Property of Multiplication Factors can be multiplied in any order and the product remains the same.
Identity Property of Multiplication The product of any number is that number.
Zero Property of Multiplication The product of any number and zero is zero.
Distributive Property of Multiplication Breaking apart problems into two simpler problems. (3 x 21) = (3 x 20) + (3 x 1)
Array a way of displaying objects in rows and columns.
Area Model The number of square units needed to cover the region.
Multiplication A mathematical operation where a number is added to itself a number of times.
Multiple The product of any two whole numbers.
Row Items in an array arranged in a horizontal line.
Column Items in an array arranged in a vertical line.
Dimensions Refers to the length, width, and height of a shape.
Fact Family A group of related facts using the same set of numbers. Example: 3 x 5 = 15; 5 x 3 = 15; 15 / 3 = 5; 15 / 5 = 3
Compatible Number Numbers that are easy to compute mentally.
Estimate An approximate rather than an exact answer.
Round To estimate a number to the nearest ten, hundred, or thousands.
Approximate To estimate a number amount, or total, often rounding it off to the nearest 10 or 100.
Created by: twaller