EIGHTH GRADE TRAINING GUIDE

1994 Mathematics Rubric - Eighth Grade

FORM F

4. A bottle of orange juice costs 15 cents more than a package of rolls. A box of pop tarts costs 60 cents more than a carton of milk. The total cost of these four items is $3.57. What are 2 possible sets of prices these items could have?

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	.	.	.	.
Set Two	.	.	.	.

ITEM SCORE SCALE

NOTE: In order for a set to be correct, the price of the rols and the price of the milk must add up to $1.41.

0	Answer is unresponsive, unrelated, or inappropriate. Answer contains nothing correct.
1	Answer contains something correct. Either one set is correct in both cost relationships (juice/rolls and tarts/milk); or, one to two sets are correct in total cost.
2	Answer contains two sets which are both correct in cost relationships (juice/rolls, tarts/milk). Or, one set is correct in both cost relationships and in total cost. Or, one set is correct in both cost relationships and the other set is correct in total cost.
3	Answer contains two sets which are fully correct in cost relationships and total cost.

STUDENT RESPONSES

QUESTION

STUDENT RESPONSE NUMBER ONE

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	35 cents	15 cents	$1.20	60 cents	= $2.30
Set Two	50 cents	35 cents	$2.40	$1.20	= $4.45

RUBRIC SCORING

0 -- No set is correct in both cost relationships. No set is correct in total cost.

STUDENT RESPONSE NUMBER TWO

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	$1.00	84 cents	$1.13	60 cents
Set Two	$1.13	98 cents	$1.00	36 cents

RUBRIC SCORING

1 -- No set is correct in both cost relationships. Set 1 is correct in total cost.

STUDENT RESPONSE NUMBER THREE

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	85 cents	70 cents	100 cents	40 cents
Set Two	90 cents

RUBRIC SCORING

1 -- Set 1 is correct in both cost relationships.

STUDENT RESPONSE NUMBER FOUR

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	1.15	1.00	1.10	.50
Set Two	1.25	1.10	1.00	.40

RUBRIC SCORING

2 -- Both sets are correct in both cost relationships.

STUDENT RESPONSE NUMBER FIVE

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	1.15	1.00	1.42	82 cents
Set Two	1.00	85 cents	1.12	60 cents

RUBRIC SCORING

2 -- Set 1 is correct in both cost relationships. Set 2 is correct in total cost.

STUDENT RESPONSE NUMBER SIX

	Orange Juice	Rolls	Pop Tarts	Milk
Set One	56 cents	41 cents	1.60	1.00
Set Two	60 cents	45 cents	1.56	96 cents

RUBRIC SCORING

3 -- Both sets are correct in both cost relationships and in total cost.

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