Question
Gabby used 18 of the ribbon to tie some presents. She threw away 511 of the remaining ribbon. As a result, she had 378 cm of the ribbon left. How much ribbon did Gabby have at first? Give your answer in cm.
4 m

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Gabby used 18 of the ribbon to tie some presents. She threw away 511 of the remaining ribbon. As a result, she had 378 cm of the ribbon left. How much ribbon did Gabby have at first? Give your answer in cm.