Asked by Olivia

shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?

11 years ago

Answered by Damon

I would add 15 to 40

11 years ago

Answered by Olivia

can you can why? detailed please

11 years ago

Answered by Olivia

can you explain why?

11 years ago

Answered by Damon

17 - 2 + 2 + 38

= 15 + 40

11 years ago

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