standard_description: Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
problem_activity: Problem 1
An incomplete calculation of 392 ÷ 7 is shown below. Fill in the boxes to write the missing numbers that would make the calculation complete.
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Problem 2
Solve. Then check your work.
$$596\div3$$
Problem 3
Chris baked 128 cookies to sell at his bakery. He put the cookies in boxes that can each hold 6 cookies. He will only sell full boxes. How many full boxes of cookies does he have to sell?


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