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Mathematics, 22.01.2020 00:31 Parmenter

Read the word problem below.

antonio has a total of 55 marbles. he has 15 green marbles and 12 red marbles. the rest of the marbles are blue. how many blue marbles does he have?

a student solves this problem by writing an equation. which strategy could check the student’s answer?

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antonio has a total of 55 marbles. he has 15 green marbles...
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