Reply to How are we supposed to teach addition and subtraction?

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[quote=Anonymous][quote=Anonymous]You can teach your child to add and subtract in any ways you like. If their school teaches a different method, so much the better. Learning more than one way to solve problems is like exercise for the brain.

Best practices say to grade based on arriving at the correct answer via any grade level-appropriate method. (Drawing 35 dots and then 51 dots and then counting them one by one would not be appropriate for any grade above K.)[/quote]

Math is math.  Borrowing and carrying work because of place value, and when you use place value, you botrpw and carry.

Personally, I think m money is an excellent tool to teach math.  They can see that ten pennies equals a dime, ten dimes equals a dollar, etc.  Have them work out problems, borrowing and carrying as necessary.

ex.  Here is 43 cents. You have 4 dimes and 3 pennies.  If you give me sixteen cents, how much will you have left.  They’ll have to use place value and “borrow” a dime, decomposing it into ten pennies, at which point, the problem becomes simple.  
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