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Flowchart Bills - Calculating Gas Bills

Calculate bill totals by following the instructions given in the form of a flow chart.

  Menu   Level 1 Level 2 Level 3 Investigation More Money Maths

This is level 3; Calculating Gas Bills You can earn a trophy if you get at least 7 correct.

You have started a new job preparing bills and the boss has sketched this flow chart to show how the totals are arrived at. Calculate the cost of the items on the right:

Flowchart Flowchart Flowchart

31 therms

£ Correct Wrong

62 therms

£ Correct Wrong

274 therms

£ Correct Wrong

50 therms

£ Correct Wrong

100 therms

£ Correct Wrong

31 therms

£ Correct Wrong

84 therms

£ Correct Wrong

203 therms

£ Correct Wrong

56 therms

£ Correct Wrong

286 therms

£ Correct Wrong

Check

This is level 3. You can also try:
Level 1 Level 2

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

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Belgium,

Friday, November 24, 2023

"This amazing flowchart made by Kikkervelf from Belgium went viral on Reddit.

British Measures Flowchart "

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Description of Levels

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Level 1 - Selling Textbooks

The more textbooks a customer buys the cheaper the unit price. The task at this level is to calculate the cost of buying different numbers of textbooks using the flow chart for guidance.

Level 2 - Selling Eggs

Similarly buying eggs in bulk is cheaper (per egg) than buying a smaller number of eggs. Traditionally eggs have been sold by the dozen. A dozen is 12.

Level 3 - Calculating Gas Bills

Paying for gas and electricity usually includes a standing charge and a staged set of charges per unit. The amount of gas is measured in therms.

Investigation

Try many different starting numbers in the given flowchart. Which starting numbers reach one the fastest? Why?

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