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OAS 3.N.2.5 Worksheets

OAS 3.N.2.5 (Oklahoma, 3rd Grade): "Use addition and subtraction to solve problems involving whole numbers. Use various strategies, including the relationship between addition and subtraction and the context of the problem to assess the reasonableness of results." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.

Numbers & Operations (N) 3.N.2 Solve real-world and mathematical problems using addition, subtraction, multiplication, and division. 3.N.2.5Use addition and subtraction to solve problems involving whole numbers. Use various strategies, including the relationship between addition and subtraction and the context of the problem to assess the reasonableness of results.

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3.N.2.5

OAS 3.N.2.5 Worksheets - Multiple Addends (3 Digits) Word worksheet

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Multiple Addends (3 Digits) Word

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Practice adding three numbers together to find a total
Solve word problems by picking out the important numbers from a story
Figure out when a problem is asking you to combine groups to find "how many in all"

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OAS 3.N.2.5 Worksheets - Solving Mixed Problems within 1000 (+ -) worksheet

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Solving Mixed Problems within 1000 (+ -)

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

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OAS 3.N.2.5 Worksheets - Subtraction (Traditional) worksheet

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Subtraction (Traditional)

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Learn how to set up subtraction problems in columns by lining up the ones, tens, and hundreds places.
Practice subtracting multi-digit numbers using the traditional method.
Use regrouping (borrowing) when the top digit is smaller than the bottom digit in a place value.
Keep track of place value so each digit is subtracted from the correct digit.

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OAS 3.N.2.5 Worksheets - Two Step Problems with Multi-Digit Numbers (Word Problems) worksheet

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Two Step Problems with Multi-Digit Numbers (Word Problems)

Decide which operations are needed to solve a two-step word problem.
Add and subtract multi-digit numbers accurately with regrouping.
Find a missing part when the total and other parts are known.
Check that an answer is reasonable using the context of the problem.

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OAS 3.N.2.5 Worksheets - 2 zeroes worksheet

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2 zeroes

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Subtract larger numbers where the top number has zeros in it.
Use regrouping to subtract when you need to borrow across a zero.
Line up digits by place value so each column is subtracted correctly.

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OAS 3.N.2.5 Worksheets - Subtracting with Regrouping worksheet

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Subtracting with Regrouping

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Subtract multi-digit numbers using borrowing when you need to trade from a higher place value.
Handle subtraction problems where you have to regroup more than once in the same problem.

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OAS 3.N.2.5 Worksheets - Add & Subtract within 1,000 worksheet

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Add & Subtract within 1,000

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Solve for an unknown number in simple addition and subtraction equations within 1,000.
Use addition and subtraction facts to figure out what number makes an equation true.
Check that the answer makes sense by plugging the number back into the equation.

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OAS 3.N.2.5 Worksheets - Following Two-Step Addition and Subtraction Directions worksheet

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Following Two-Step Addition and Subtraction Directions

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Follow directions that require two steps in a row
Carry the result of the first step into the second step
Tell 'subtract 400 from it' apart from 'subtract it from 400'
Add and subtract whole numbers up to 100,000

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OAS 3.N.2.5 Worksheets - Deciding if an Answer is Reasonable worksheet

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Deciding if an Answer is Reasonable

Judge whether an answer someone else gave is reasonable
Use estimation to check an answer without working it out exactly
Recognize that one part can never be larger than the whole
Decide when an answer is too far off to be believable

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OAS 3.N.2.5 Worksheets - Addition and Subtraction with Regrouping worksheet

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Addition and Subtraction with Regrouping

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Practice adding multi-digit numbers using carrying when a place value adds to 10 or more.
Practice subtracting multi-digit numbers using borrowing when you don’t have enough in a place value.

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