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6.01 Groups and arrays

Lesson

Are you ready?

Do you remember how to arrange objects into an array? Try arranging $20$20 objects into an array with $5$5 rows and $4$4 columns.

 

Learn

In this video we see how rows and columns (called an array), can be used to solve multiplication.

 

Apply

Which number sentence describes the array?

There may be more than one correct answer.

  1. $8\times10=80$8×10=80

    A

    $10\times8=80$10×8=80

    B

    $8\times80=10$8×80=10

    C

Remember!

We get the same answer whichever way we look at our array.

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