Adding Up: Word Problems with Reasoning and Checks

Lily has 5 apples. She buys 3 more apples. How many apples does she have now? Explain how you found your answer.

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Tom has 12 marbles. He gives 4 marbles to his friend. How many marbles does Tom have left? Check your work by adding the marbles he gave away to the ones he has now.

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A farmer has 20 chickens. He buys 15 more chickens. How many chickens does he have in total? Write down your reasoning.

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Sarah read 8 books in January and 7 books in February. How many books did she read in total? Show your work and explain your steps.

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In a box, there are 10 red balls and 6 blue balls. How many balls are there in total? Check your answer by adding the two groups together.

• 12

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A bakery made 25 cupcakes in the morning and 30 cupcakes in the afternoon. How many cupcakes did they make altogether? Explain how you calculated the total.

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• 55

There are 14 students in one class and 16 students in another class. How many students are there in both classes? Write your reasoning for the answer.

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Emma has 9 stickers, and her friend gives her 11 more stickers. How many stickers does Emma have now? Check your answer by adding the stickers she had and the ones she received.

• 20

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• 15

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A zoo has 18 lions and 22 tigers. How many big cats are there in total? Explain how you arrived at your answer.

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• 35

Mark collected 7 toy cars, and his brother gave him 5 more. How many toy cars does Mark have now? Check your work by adding the cars he had to the ones he received.

• 12

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• 15