Multiplication Strategies

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 x 4 means adding 3 four times (3 + 3 + 3 + 3 = 12).

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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, the product is 30.

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What does it mean to estimate a product?

Back

Estimating a product means finding a rough value of the multiplication result, often by rounding the numbers to make the calculation easier.

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or more, round up; if it is 4 or less, round down.

Front

What is the last digit of the product of two numbers?

Back

The last digit of the product can be determined by multiplying the last digits of the two numbers. For example, for 35 x 79, the last digits are 5 and 9, and 5 x 9 = 45, so the last digit is 5.

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What is a multiplication strategy?

Back

A multiplication strategy is a method used to simplify the process of multiplying numbers, such as using arrays, number lines, or breaking numbers apart.

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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).

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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, 4 x 5 = 5 x 4.

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How can you use the distributive property in multiplication?

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The distributive property allows you to break a number into parts to make multiplication easier. For example, 6 x 13 can be broken down as 6 x (10 + 3) = (6 x 10) + (6 x 3).

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What is a factor in multiplication?

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A factor is a number that is multiplied by another number to get a product. For example, in 4 x 5, both 4 and 5 are factors.