saintshockey saintshockey
  • 13-10-2015
  • Mathematics
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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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xueliweng1129
xueliweng1129 xueliweng1129
  • 13-10-2015
you can just add 7+8=15 and 10 + 30 = 40 and add 40 + 15
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