Mathematics · Foundation

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Counting changeRunning
Number line. Change returned at 32 ₹. Price plus change 317 ₹, Note handed over 500 ₹. Currently price plus change is short by 183 ₹.TUNING-50-40-30-20-100102030405032 ₹317 ₹
t = 0.0s

Price plus change

317₹

Note handed over

500₹

32 ₹

Number line. Change returned at 32 ₹. Price plus change 317 ₹, Note handed over 500 ₹. Currently price plus change is short by 183 ₹.

What has to balancespent+change=paid\text{spent} + \text{change} = \text{paid}

What is happening

You arrive at a stationery counter at the start of a school term.

A note worth 500 rupees went across the counter for goods costing 285. The till is disputing the change and the queue is growing.