Multiplication Unit 2

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3).

Front

What is the product in multiplication?

Back

The product is the result of multiplying two or more numbers together. For example, in 5 x 6 = 30, 30 is the product.

Front

What does it mean to multiply a number by zero?

Back

When you multiply any number by zero, the result is always zero. For example, 7 x 0 = 0.

Front

What is an array in multiplication?

Back

An array is a visual representation of multiplication using rows and columns. For example, 3 rows of 4 objects each can represent 3 x 4.

Front

How do you find the total number of items in equal groups?

Back

To find the total number of items in equal groups, multiply the number of groups by the number of items in each group. For example, 4 groups of 5 items each is 4 x 5 = 20.

Front

What is the commutative property of multiplication?

Back

The commutative property states that changing the order of the numbers in multiplication does not change the product. For example, 2 x 3 = 3 x 2.

Front

What is the associative property of multiplication?

Back

The associative property states that when multiplying three or more numbers, the way in which the numbers are grouped does not change the product. For example, (2 x 3) x 4 = 2 x (3 x 4).

Front

What is a factor in multiplication?

Back

A factor is a number that is multiplied by another number to get a product. For example, in 6 x 4, both 6 and 4 are factors.

Front

What is the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. For example, a rectangle that is 5 feet long and 3 feet wide has an area of 5 x 3 = 15 square feet.

Front

How do you multiply two-digit numbers?

Back

To multiply two-digit numbers, you can break them down into tens and ones, multiply each part, and then add the results. For example, to multiply 23 x 4, do (20 x 4) + (3 x 4) = 80 + 12 = 92.