Grades:
1st Grade,
3rd Grade,
2nd Grade
Subjects:
Math
Standards:
Look for and make use of structure. (MP.7.),
Make sense of problems and persevere in solving them. (MP.1.),
Attend to precision. (MP.6.),
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. (2.NBT.7.)
Student Instructions
Sign Up
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2. Solve each subtraction π§©puzzleπ§©.
3. Enter in your minuend and subtrahend to check.
Were you correct? β
Move to next puzzle!
Not correct YET? π§ Keep working on it!
4. Done with all ten? Click 
. Not done YET? Click 
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