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Number
Operations [4.1.4.B.6] [Open-ended Question]
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Sarah goes to the store to buy some food for an afternoon
snack. She buys a bottle of orange juice for $1.67, a bag of
pretzels for $0.89, and 2 apples for $0.45 each. She must also
pay $0.16 tax.
- How much does Sarah have to pay in all? Show your work.
- What bills and coins would Sarah give to the salesperson
to pay for the food using exact change?
Scoring rubric
3 points
The student shows a correct procedure to figure out that the
total cost of the food is $3.62. The student also identifies
a correct combination of bills and coins that will make exactly
$3.62.
2 points
The student shows a correct procedure to figure out that the
total cost of the food is $3.62. The student may or may not
attempt to give a combination of bills and coins.
OR
The student shows a correct procedure for determining the total
cost of the food but makes a minor computational error resulting
in a reasonable but incorrect total cost and uses that answer
to correctly identify the bills and coins needed to pay for it
using exact change.
1 point
The student makes an error in figuring out the total cost of
the food but uses that answer to correctly identify the bills
and coins needed to pay for it using exact change. There may
or may not be a minor error in the bills and coins.
0 points
The response shows insufficient understanding of the problem's
mathematical concepts.
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