Siti has 100 unit cubes. She uses them to build a solid cuboid that is 6 cubes long, 5 cubes wide and 3 cubes tall. How many unit cubes will she have left over?
Show Worked Solution
Worked Solution
Step 1: Find the number of unit cubes needed to build the cuboid.
6 × 5 × 3 = 90 unit cubes
Step 2: Find the number of unit cubes left over.
100 − 90 = 10 unit cubes
Siti will have 10 unit cubes left over.
Correct answer: 10
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