Question
Cindy used 411 of the thread to tie some presents. She threw away 57 of the remaining thread. As a result, she had 40 cm of the thread left. How much thread did Cindy have at first? Give your answer in cm.
4 m

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Cindy used 411 of the thread to tie some presents. She threw away 57 of the remaining thread. As a result, she had 40 cm of the thread left. How much thread did Cindy have at first? Give your answer in cm.