Five pages on paying cash in Canada, where the smallest coin is the nickel, so a cash total is rounded to the nearest 5 cents: an amount ending in 1¢ or 2¢ rounds down to 0, 3¢ or 4¢ up to 5¢, 6¢ or 7¢ down to 5¢, and 8¢ or 9¢ up to the next 10¢. Page 1 starts with simple purchases: a granola bar for 65¢ paid with a loonie, or a book for $7 paid with a $10 bill. Children count on along an open number line from the price to the money paid and write the change. On page 2 children find a price on a number line with a tick for every cent, circle up or down and write the price to the nearest 5¢, so $1.86 becomes $1.85 and 59¢ becomes 60¢. Page 3 adds two or three prices: when the story says cash, the total is rounded, and when it says card, it is not. On page 4 children round each price to the nearest dollar to estimate, then find the exact total and the cash total and decide whether the money is enough; once the estimate and the cash total disagree. Page 5 is a snack bar with price tags: children add the things bought, round the total for cash, find the change from a bill and write how many of each coin and bill make the change with the fewest pieces. The first problem on each page is worked as an example.
Start with a class store and play coins: nickels, dimes, quarters, loonies and toonies, and no pennies. Ask how you could pay exactly $2.43, then draw a number line from $2.40 to $2.45 and find the nearer end together. For page 1, count on out loud from the price: "65¢, 70¢, a dollar, so the change is 35¢." Before page 3, compare two receipts for the same shopping, one paid in cash and one by debit card. On page 4, ask whether an estimate is good enough to decide if $10 will pay, and talk about the story where it is not.
Look at a store receipt together and find the total. Ask what you would pay in cash, rounded to the nearest 5 cents, and what you would pay by card. When you pay cash, let your child work out the change before it is given, counting on from the price to the bill, and then count it back with the fewest coins.
This pack supports the following Common Core State Standards for Mathematics:
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Paying cash in Canada, where there are no pennies, so a cash total is rounded to the nearest 5 cents. Students count on to find the change, round prices and totals, estimate the cost before they shop and give change in the fewest coins and bills.
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