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2nbt7 Worksheets

Number and Operations in Base Ten Use place value understanding and properties of operations to add and subtract. 7Add 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.

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Solving Mixed Problems within 1000 (+ -)

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Practice adding and subtracting numbers up to 1,000 accurately.
Decide whether to add or subtract based on the symbols in the problem.
Use regrouping when needed to solve multi-digit addition and subtraction.
Keep digits lined up by place value so the answer makes sense.
Practice finding a missing number in addition and subtraction equations
Get comfortable seeing the unknown in different spots — at the beginning, middle, or end of an equation

2nbt7 Worksheets - Adding Within 1,000 worksheet

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Adding Within 1,000

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Add two numbers up to 1,000 to find the total.
Use carrying (regrouping) when a place value adds to 10 or more.
Add in vertical form using the standard step-by-step method.

2nbt7 Worksheets - 3 Digit Minus 3 Digit worksheet

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3 Digit Minus 3 Digit

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Subtract one 3-digit number from another to find the difference.
Line up hundreds, tens, and ones correctly before subtracting.
Use borrowing (regrouping) when the top digit is smaller than the bottom digit in a place.
Subtract accurately across zeros when borrowing is needed.

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