Multiplying Whole Numbers

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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).

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CCSS.3.OA.A.1

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What is the product of two numbers?

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

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CCSS.3.OA.A.1

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How do you multiply a number by 10?

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To multiply a number by 10, you add a zero to the end of that number. For example, 7 x 10 = 70.

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CCSS.3.NBT.A.3

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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 represent 3 x 4.

Tags

CCSS.3.OA.A.1

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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, 4 x 5 = 5 x 4.

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CCSS.3.OA.B.5

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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).

Tags

CCSS.3.OA.B.5

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What is the identity property of multiplication?

Back

The identity property states that any number multiplied by 1 remains unchanged. For example, 8 x 1 = 8.

Tags

CCSS.3.OA.B.5

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How do you multiply two-digit numbers?

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To multiply two-digit numbers, you can use the standard algorithm, which involves multiplying each digit of one number by each digit of the other and then adding the results.

Tags

CCSS.4.NBT.B.5

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What is a word problem in multiplication?

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A word problem is a mathematical problem that is presented in a narrative form, requiring the use of multiplication to find the solution.

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CCSS.3.OA.D.8

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Calculate: 8 x 25

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200

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CCSS.4.NBT.B.5