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# Calculating Bills

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by

## Mr Mattock

on 21 March 2018

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#### Transcript of Calculating Bills

Calculating Bills
Utility bills
Invoices
L.O. - Calculate household bills in different formats.
Invoices
£186
£10.50
£48
£276
electricity meter is 46043 units.

The old reading is 32436 units.
If it costs 1.7 pencer per unit, what is the cost of the electricity?
Utility bills
electricity meter is 46043 units.

The old reading is 32436 units.
If it costs 1.7 pence per unit, what is the cost of the electricity?
1.7 x 13607 = 23131.9 pence = £231.32
Main Activity
Complete the Invoice and bills worksheet.
Main Activity
Complete the Invoice and bills worksheet.
1). £268, £4.20, £13.50, £294.10 (1 Mark for each)

2). 2159 - 1962 = 197 (1 Mark). 179 x 0.21 = £41.37 (1 Mark)

3). 2658 - 2430 = 228 (1 Mark). 228 x 0.32 = £72.96 (1 Mark)

4). 80305 - 79721 = 584 (1 Mark). 584 - 70 = 514 (1 Mark) 514 x 0.102 + 70 x 0.213 = 67.338 (1 Mark) = £67.34
(1 Mark)
Plenary
In groups, complete the exam question
Plenary
In groups, complete the exam question
(a) 2000 x 12 = 24000 miles per year (1 Mark)
24000/50 x 5 = £2400 (1 Mark)

(b) 24000 x 0.1 = £2400 other costs. (1 Mark)
24000 x 0.4 = £9600 paid to Barbara (1 Mark)
£9600 - £2400 - £2400 = £4800 > 3000 so
Yes (1 Mark)
Key
Examples

Activity

Activities
Worked
Example

Worked
Example

Starter
electricity meter is 46043 units.

The old reading is 32436 units.
How many units have been used?

Starter