How can you use 2s facts to find 4×8?

Understanding the Connection

To use 2s facts to find 4 x 8, we need to recognize that 4 is essentially two groups of 2.

Breaking Down the Problem

1. Start with the 2s fact: We know that 2 x 8 = 16.
2. Double the 2s fact: Since 4 is double of 2, we can double the result of 2 x 8.
   • 16 (from 2 x 8) doubled is 16 + 16 = 32.

Therefore, 4 x 8 = 32.

Visual Representation

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two groups of eight objects, each group further divided into two groups of four objects

This visual representation helps to understand how doubling the 2s fact corresponds to the multiplication of 4 x 8.