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Closest Without Going Over: Shopping Totals
Created by Argraide
Updated October 27th, 2026
At a glance
- Staff pick
- Picked by the Argraide team
- Play mode
- 👥 Group
- Format
- 🖼️ 2D
- Length
- ⏱ About 20 minutes
- Subject
- Math
- Grade
- 5
- Curriculum
- Ontario
- Curriculum codes
- F1.2B2.3B2.4
About this activity
A whole-class bidding show: a cart of prizes rolls onto the turntable, every student bids on the total from a phone keypad, and the real total drops onto a number line of every bid. Phases: round and add, exact totals, adding 13% HST, and a tax-included showcase.
What students learn
- Estimate the total cost of several items by rounding each price to the nearest dollar
- Add several prices in dollars and cents exactly, carrying cents into dollars
- Calculate Ontario's 13% HST as 13 cents on every dollar and add it to a total
- Estimate a larger total with tax included
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