A dime has the same value as 10 pennies and a nickel has the same value as 5 pennies. How many pennies will Grace have by exchanging her 10 dimes and 10 nickels?
Grace will have 10 x 10 = <T>multiply(10, 10)=100 pennies from her dimes.
She will have 10 x 5 = <T>multiply(10, 5)=50 pennies from her nickels.
Therefore, she will have a total of 100 + 50 = <T>add(100, 50)=150 pennies.
