Mathematics, 18.10.2020 15:01 tomasholguin

A model with 3 rows of 5 squares and 3 rows of 3 squares. Use the model to find the missing number in the pair of equivalent expressions. 15 + 9 = ?(5 + 3) What number is missing from the expression?

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A model with 3 rows of 5 squares and 3 rows of 3 squares. Use the model to find the missing number i...

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