Video: Finding the Number of Cubes in a Given Three-Dimensional Figure

Daniel and Natalie have both built a model out of shapes. Daniel has used fewer cubes than Natalie. Which picture is Natalie’s?

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Video Transcript

Daniel and Natalie have both built a model out of shapes. Daniel has used fewer cubes than Natalie. Which picture is Natalie’s?

We know that Daniel and Natalie have both built a model using different shapes. But we don’t know which model is Daniel’s or which model is Natalie’s. We’re told that Daniel has used fewer cubes than Natalie. Which of the two models has used the fewest cubes? This is a cube. How many cubes are there in this model. This model has three cubes. This model has also made part of its tower using three cubes. And it also uses cubes on the other tower. So, altogether, this model has four, five, six cubes.

We already know that Daniel has used fewer cubes than Natalie. Three cubes is less than six cubes. So, the first model must belong to Daniel. And the second model belongs to Natalie. So, this is the picture which shows Natalie’s model. Daniel used fewer cubes. Natalie used more cubes than Daniel. So, this is Natalie’s model.

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