Question

Rosemary put 7 dimes and 3 pennies any tip chart the cafe this show this amount as a decimal and as a fraction home much more change would rosemary have to put in the tip jar to make a whole dollar

Answer 1

Penny:

3/100 ; 0.03

Dimes :

7/10 ; 0.7

Amount to add to make whole number = $0.23

Explanation:

Recall:

100 pennies = $1

1 penny = 1 / 100

3 Pennies = 3 / 100 (In fraction)

3 pennies = 0.03

10 dime = $1

1 dime = 10 /100 = 1/ 10

7 dimes = 7/10 (fraction)

7 dimes = 0.7

To make the money in jar a whole dollar :

Amount to be added :

1 - (0.03 + 0.70)

1 - 0.73

= $0.27