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Solve the problems in the provided boxes. Students should draw the Tbar (example below) in each box and solve the problem as shown in the first example.


23 + 49 = 72

42 + 98 = 140 
54  18 = 36 



691  438 = 253 
241 + 689 = 930 
454  178 = 276 
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The various resources listed below are aligned to the same standard, (2NBT07) taken from the CCSM (Common Core Standards For Mathematics) as the Addition and subtraction Worksheet shown above.
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 threedigit 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.
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Use place value understanding and properties of operations to add and subtract