One dollar equals 100 cents. We could write 100 cents as 100 ¢, but normally we write it as $1.00. When we read $1.00 we say one dollar. The dollar sign ($) comes first, but we say it last.
2 half dollars = $1.00 4 quarters = $1.00 10 dimes = $1.00 20 nickles = $1.00 100 pennies = $1.00
If you have 7 dimes, how many more dimes do you
need to have one dollar?
7 dimes = 70 ¢
1 dollar = 100 ¢
So, you need 30 ¢
ANSWER: 3 dimes