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March 29, 2017

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math to endure the heat,firefighters wear protective gear that weighs about 40 pounds.If a suited-up firefighter weighs 220 pounds,how can you use mental math to find the firefighters weight without the gear?

  • 3rd grade - ,

    Can you subtract 4 from 22?

  • 3rd grade - ,

    yes, 22-4=18.

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