Worksheets11.1 Utility Expenses
Total questions: 15
Worksheet time: 1hrs 15mins
Convert 82% to a decimal.
0.8
8.2
82
0.82
Convert 2.5% to a decimal.
2.5
0.025
0.25
25
How many watts in a kilowatt?
10
100
1000
1
Convert 120 minutes to hours.
2
60
3
240
Convert 90 minutes to hours.
180
3
1.5
240
Given a total of 2 hours and 125 watts, find watt-hours.
62.5
250
123
150
Given a total of 1.5 hours and 150 watts, find watt-hours.
250
225
148.5
100
Convert 250 watts to kilowatts.
125
2500
250000
0.25
Convert 225 watts to kilowatts.
0.225
225000
22500
2.25
Given you have 0.25 kilowatts-hours and it costs $0.12 per kilowatts-hour, find the cost per kilowatt-hour.
$0.03
$0.30
$3
$2.08
Given you have 0.225 kilowatts-hours and it costs $0.11 per kilowatts-hour, find the cost per kilowatt-hour.
$2.05
$0.20
$0.03
$0.02
Last year, the Smith family spend $3036 for electricity. What will their monthly payment be?
$50.60
$36432
$3.036
$253
How much does the Smith family have to spend annually so their monthly payment will be $226?
$18.83
$226000
$13560
$2712
The Pendell's old water heater costs them $430 per year to run. Find the annual savings in energy if a new heater saves them 27% to run it.
$1592.59
$116.10
$15.93
$11610
How many years will the new $1020 water heater pay for itself if the annual savings is $116.10?
9
10
8
1
