I
An operation that gives the TOTAL number when you join equal groups.
Multiplication
A number sentence that uses an equal sign = to show the value on the left equals the value on the right.
Equation
Numbers can be multiplied in ANY order and the answer will always be the same. What property is this?
Commutative Property
When writing the equation for an array, which comes first... rows or columns?
ROWS
Solve. 6 x 2 = _____
12
_______________ have the same number of items in each grouping.
Equal Groups
Displaying objects in rows and columns.
Array
TRUE or FALSE
Any letter can be used as an unknown.
TRUE
Draw an array for 5 x 4 = 20.
See Drawings
Solve. 7 x 2 =
14
The answer to a multiplication problem.
Product
column
What property does this show?
2x3=12
3x2=12
Commutative
Use the Commutative Property. What would the other equation be?
8 x 9 = 72
9 x 7 = 72
Solve. 5 x 5 =
25
The numbers that are multiped together.
Factors
Row
What is the PRODUCT to this equation?
5 x 5
25
A line divided into equal units and numbered.
Number Line
Solve. 4 x 3 =
12
A symbol or letter that stands for a missing number in an equation. Example: Z
An operation that tells how many are in each equal group.
Division
List the FACTORS in this problem.
4 x 4 =16
Name 3 ways to solve a multiplication problem if you do not have it memorized.
Equal Groups
Repeated Addition
Arrays
Solve. 9 x 3 =
27