Envision Topic 3 Test - Multiply Whole Numbers

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What is multiplication?

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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 = 12.

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What is the product in multiplication?

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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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How do you write a multiplication equation?

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A multiplication equation can be written in the form of a x b = c, where a and b are the numbers being multiplied, and c is the product.

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What does the term 'estimate' mean in math?

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To estimate means to find an approximate value or answer, rather than an exact one. Estimating helps to quickly assess the size or value of a number.

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What is an overestimate?

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An overestimate is when you predict a value that is higher than the actual value. For example, if you estimate that 7 x 8 is 60, that is an overestimate.

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What is an underestimate?

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An underestimate is when you predict a value that is lower than the actual value. For example, if you estimate that 7 x 8 is 50, that is an underestimate.

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What is the associative property of multiplication?

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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). Both equal 24.

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What is the commutative property of multiplication?

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The commutative property states that changing the order of the numbers in multiplication does not change the product. For example, 3 x 4 = 4 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. In 6 x 7, both 6 and 7 are factors.

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How can you check your multiplication?

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You can check your multiplication by using the inverse operation, which is division. For example, if you calculated 4 x 5 = 20, you can check by doing 20 ÷ 4 = 5.