Wei Lin uses unit cubes to build an L-shaped solid at school. She places 3 unit cubes in a row along the bottom, then stacks 2 more unit cubes on top of the leftmost cube. How many unit cubes does she use altogether?
Show Worked Solution
Worked Solution
Step 1: Count the cubes in the bottom layer.
Bottom row: 3 unit cubes
Step 2: Count the cubes stacked on top.
Extra cubes on leftmost position: 2 unit cubes
Step 3: Add the layers together.
3 + 2 = 5
Answer: Wei Lin uses 5 unit cubes altogether.
Correct answer: 5
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