Multiplication

Detailed description

1. A rectangular prism made of blocks. Dimensions 3 × 2 × 1. Underneath this diagram 3 × 2 = 2 × 3.
2. A rectangular prism made of blocks. Dimensions 3 × 2 × 5. Underneath this diagram (3 × 2) × 5 = (2 × 3) × 5.

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