Finding Volume of Rectangular Prisms with Fractional Edge Lengths Using Unit Cubes

The video tutorial explains how to find the volume of a rectangular prism and a cube with fractional edge lengths by packing them with unit cubes of appropriate fractional edge lengths. It begins with a review of key concepts such as volume and fractions. The tutorial then demonstrates how to calculate the volume of a cube by cubing its side length and using unit cubes. An example of a rectangular prism is provided, showing how to determine its volume using unit cubes and verifying the result with traditional multiplication of dimensions. The video concludes by summarizing the methods used.

When adding fractions with a common denominator, what do you do with the numerators?

• Add them

• Subtract them

• Divide them

• Multiply them

How do you calculate the volume of a cube if you know the side length?

• Multiply the side length by 4

• Square the side length

• Multiply the side length by 2

• Cube the side length

What is the volume of a unit cube with side length 1/4 inch?

• 1/16 cubic inch

• 1/32 cubic inch

• 1/8 cubic inch

• 1/64 cubic inch

How many layers of cubes are there in a cube with side length 3/4 inch?

• Three layers

• Five layers

• Two layers

• Four layers

What is the volume of a rectangular prism with dimensions 2/5 cm by 2/5 cm by 3/5 cm?

• 8/125 cubic centimeters

• 12/125 cubic centimeters

• 6/125 cubic centimeters

• 10/125 cubic centimeters