Multiplication Strategies

Front

What is multiplication?

Back

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

Front

What is an estimate in multiplication?

Back

An estimate is a rough calculation of a value, often achieved by rounding numbers to make multiplication easier.

Front

How do you round numbers for estimation?

Back

To round a number, look at the digit to the right of the place value you are rounding to. If it's 5 or more, round up; if it's less than 5, round down.

Front

What is expanded form?

Back

Expanded form is a way of writing numbers to show the value of each digit. For example, 628 in expanded form is 600 + 20 + 8.

Front

What is the product of two numbers?

Back

The product is the result of multiplying two numbers together.

Front

How do you find the last digit of a product?

Back

To find the last digit of a product, multiply the last digits of the numbers being multiplied and then find the last digit of that result.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder. For example, 2 and 3 are factors of 6.

Front

What is the commutative property of multiplication?

Back

The commutative property states that changing the order of the numbers you are multiplying does not change the product. For example, 3 x 4 = 4 x 3.

Front

What is the associative property of multiplication?

Back

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

Front

What is a multiplication table?

Back

A multiplication table is a chart that shows the products of pairs of numbers, typically from 1 to 12.