Teacher2Teacher 
Q&A #522 
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From: Jeanne To: Teacher2Teacher Public Discussion Date: 2000110712:58:41 Subject: Using money to understand Hello, I haven't been able to come up with a way to draw a picture of the base10 blocks on this particular type of word processor. But I recently wrote a response to a parent homeschooling her daughter which might give you an idea of what to do. Translation: pennies > units dimes > longs dollar bill > flats 10dollar bill > 1000 block Let's look at this problem using money. For now let's look at a similar problem using smaller numbers. In terms of money, this problem becomes 500 > 5 dollar bills 123 >  1 dollar bill, 2 dimes, 3 pennies   In order to do this problem your daughter needs to "make change." 500 > 4 dollar bills, 10 dimes 123 >  1 dollar bill, 2 dimes, 3 pennies   Then, 500 > 4 dollar bills, 9 dimes, 10 pennies 123 >  1 dollar bill, 2 dimes, 3 pennies   Now she can do the subtraction. 500 > 4 dollar bills, 9 dimes, 10 pennies 123 >  1 dollar bill, 2 dimes, 3 pennies   377 < 3 dollar bills, 7 dimes, 7 pennies What I can't show here is the notation that goes with the original problem, sorry. Now let's look at your original problem. 4000 > 4 10dollar bills  1296 > 1 10dollar bill, 2 dollars, 9 dimes, 6 pennies  To do this problem, she needs to make change... 4000 > 3 10dollar bills 10 dollars  1296 > 1 10dollar bill, 2 dollars, 9 dimes, 6 pennies  4000 > 3 10dollar bills, 9 dollars, 10 dimes  1296 > 1 10dollar bill, 2 dollars, 9 dimes, 6 pennies  4000 > 3 10dollar bills, 9 dollars, 9 dimes, 10 pennies  1296 > 1 10dollar bill, 2 dollars, 9 dimes, 6 pennies  2704 < 2 10dollar bills, 7 dollars, 0 dimes, 4 pennies Hope this helps. Jeanne, for the T2T service Thanks for visiting our online community. Visit Teacher2Teacher again at http://mathforum.com/t2t/
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