Video: Writing Addition Equations with an Unknown for Word Problems Involving Numbers up to 20

Madison planted 7 roses and 5 sunflowers in her garden. Choose the addition sentence that shows this, using the “?” for the total number of flowers. [A] 7 + 5 = ? [B] 7 + 12 = ? [C] 5 + ? = 7 [D] 7 + ? = 12 [E] 12 + 5 = ?

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Video Transcript

Madison planted seven roses and five sunflowers in her garden. Choose the addition sentence that shows this using the question mark symbol for the total number of flowers. Is it seven plus five equals question mark, seven plus 12 equals question mark, five plus question mark equals seven, seven plus question mark equals 12, or 12 plus five equals question mark?

The question tells us that Madison planted seven roses and five sunflowers. The question also tells us to use the question mark symbol for the total number of flowers. The sentence which shows us the number of flowers that Madison planted in her garden is seven plus five equals question mark.

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