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Smart shopper

Unit prices and a budget. Part of moving and feeling good.

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Smart shopper

Unit prices and a budget · Alberta Grade 5 · maddyhelps.com

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Work out which cereal box is really cheaper, then plan a party snack list on a $20 budget. Budgeting is deciding before the shop, not at the till.

CerealSizePricePrice per 100 g
Small box750 g$6.00
Large box1200 g$8.40

Which is the better buy, and when might the other be better anyway?

Party itemPriceBuy it?
Juice boxes (pack of 8)$5.49
Popcorn$3.99
Fruit tray$9.99
Napkins$2.49

My total, and what is left of the $20

For the grown-up

Smart shopper

Small box: $0.80 per 100 g; Large box: $0.70 per 100 g. The large box is cheaper per gram — but not better if it goes stale before it is finished, or if there is not enough money for it today. Everything on the party list costs $21.96, which is over budget, so something has to go — deciding which is the point.

Unit price is on most Canadian shelf labels, usually per 100 g or per 100 mL. Finding it on a real shelf is the best follow-up to this sheet.

Why this matters is on the moving and feeling good page. More sheets