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Shelley spent 17 minutes washing. She 38 minutes cleaning her room. Explain how you can use mental math to find how long Shelley spent on the two task
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Shelley spent 17 minutes washing. She 38 minutes cleaning her room. Explain how you can use mental math to find how long Shelley spent on the two task

User Mattias Buelens
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you can just add 7+8=15 and 10 + 30 = 40 and add 40 + 15
User Clarice Bouwer
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