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Tonya solves a problem this way, 242+336 = 579. Tonya looks at the answer and says, "OOPS, I know that answer my is wrong and I have to correct my work". How does Tonya know so quickly that she has to change her answer?

1 Answer

4 votes
6+2 is 8 not 9 so instead of going left to right she should have started with the right and she wouldn't have ran into that issue
User Richnou
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