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Robertson bought a block game for his son. The game contained 20 blocks. His son used 2/5 of the blocks to make a building. How many blocks were used in the building?
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Robertson bought a block game for his son. The game contained 20 blocks. His son used 2/5 of the blocks to make a building. How many blocks were used in the building?

User Sheehan
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8 blocks because you multiply 20 by 2/5, then you get 4 multiplied by 2 and you get 8 blocks.
User Steffen Mangold
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