Multiplication Vocabulary Flashcards
factors
the numbers that are multiplied together in a multiplication problem
product
the answer to a multiplication problem
square number
the products of a multiplication problem when a number is multiplied by itself (array is square)
commutative property
the property in addition and multiplication that says changing the order of the numbers being added or multiplied does not change the answer
array
a rectangular model that shows equal groups
factor pairs
two numbers that multiplied (paired) together to form a product
multiples
your COUNTS when you skip count by a number
prime number
a number with only one factor pair, 1 and itself
composite number
a number with two or more factor pairs
perimeter
the distance around all sides of a shape
perimeter formula for a rectangle
Perimeter = length + length + width + width
P = l + l + w + w
area
the amount of space covered by a shape
area formula for a rectangle
Area = length * width
A = l * w
example of factors
2 * 3 = 6
factors are 2 and 3
example of product
2 * 3 = 6
product is 6
example of square numbers
16 (4 * 4)
25 (5 * 5)
81 (9 * 9)
example of commutative property
2 * 5 = 10, so 5 * 2 = 10
example of array
2 * 3 = 6
2 rows, 3 in each row
X X X
X X X
factor pairs for 21
1, 21
3, 7
factor pairs for 12
1, 12
2, 6
3, 4
multiples of 9
9, 18, 27, 36, 45, 54, 63, 81, 90
multiples of 7
7, 14, 21, 28, 35, 42, 49, 56, 63, 70
21, prime or composite?
composite - it has more than one factor pair
7, prime or composite?
prime - it has only one factor pair, 1 and 7
