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Question:

Junior has saved money in his piggybank over the winter. He wants to buy a $30 computer game. If he has 14 one-dollar bills, 16 half dollars, 12 quarters, 8 dimes, 25 nickels, and 10 pennies, how much more does he need to borrow from Dad to buy the game?

A $2.85
Explaination

Convert the change to dollars or fractions of dollars and add:
14 dollars = $14.00
16 half dollars = $8.00
12 quarters = $3.00
8 dimes = $0.80
25 nickels = $1.25
10 pennies = $0.10
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Sum = $27.15
Subtract the total from $30.00 to determine how much money Junior has to borrow: $30.00 – $27.15 = $2.85.