Modeling Multiplication with Arrays

This video tutorial explains how to use arrays to model multiplication and find factors. It covers the concept of arrays as objects arranged in rows and columns, and demonstrates how to calculate products using arrays. The tutorial includes examples such as counting tomato plants and Tim's walking routine, illustrating the commutative property of multiplication. It also shows how to write multiplication sentences and solve real-world problems using arrays. The lesson concludes with a preview of the next topic, the commutative property of multiplication.

What is an array in the context of multiplication?

• A single row of objects

• A single column of objects

• A random arrangement of objects

• A set of objects arranged in rows and columns

Tags

CCSS.3.OA.A.1

How many columns are there in an array with three rows and four columns?

• Four

• Twelve

• Seven

• Three

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CCSS.3.OA.A.1

Emma planted three rows of tomato plants with six plants in each row. How many tomato plants are there in total?

• Twenty-four

• Thirty

• Eighteen

• Twelve

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CCSS.2.OA.C.4

What is the product of 3 times 6?

• 12

• 18

• 30

• 24

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CCSS.3.OA.C.7

If you have six counters, how many different arrays can you make?

• One

• Two

• Three

• Four

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CCSS.4.OA.B.4

What is the multiplication sentence for an array with 5 rows and 4 columns?

• 5 times 3

• 4 times 5

• 5 times 4

• 4 times 4

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CCSS.3.OA.A.1

How many rows are there in an array with 2 rows and 8 columns?

• Eight

• Two

• Four

• Six

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CCSS.2.OA.C.4

What is the product of 7 times 2?

• 18

• 16

• 14

• 12

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CCSS.3.OA.C.7

Tim walked four miles each day for three days. How many miles did he walk in total?

• Fourteen

• Twelve

• Ten

• Eight

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CCSS.2.OA.C.4

What is the multiplication sentence for an array with 3 rows and 4 columns?

• 3 times 3

• 4 times 3

• 3 times 4

• 4 times 4

Tags

CCSS.3.OA.A.1