Mathematics · Foundation

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Counting in fivesRunning
Number line. Coins at 18 coins. Value in the bag 92 ₹, Target value 45 ₹. Currently value in the bag is over by 47 ₹.TUNING-50-40-30-20-100102030405018 COINS92 ₹
t = 0.0s

Value in the bag

92₹

Target value

45₹

18 coins

Number line. Coins at 18 coins. Value in the bag 92 ₹, Target value 45 ₹. Currently value in the bag is over by 47 ₹.

What has to balance5n=455n = 45

What is happening

You arrive at a tuck shop counting five-rupee coins into a bag.

The bag has to hold forty-five rupees in five-rupee coins exactly. The shopkeeper keeps losing count partway.