Selected Answers and explanations
Performance Task 1
1. 68
2. B
3. Classmate is incorrect. Total plums =166; Cartons hold 8
plums; 20 cartons hold 20 x 8 = 160 plums with 6
remaining
4. I need 21 boxes. 21 boxes cost 21 x $1.30 = $27.30
5. The teacher assumed that there are 204 students
altogether in the three classes. She divided the number of
students by two since each student would get a mango.
6. 8 12 ; I add the totals for carrot, celery and lettuce: 4 14 ,
1 ¾ and 2 ¾
Performance Task 8
1. x = 205 - y or 205 - y = x ; Other equivalent answers should also be
accepted.
2. 2:3
3. The total volume of Ana’s suitcase is 1852 cubic inches . I found
this by multiplying the length, width, and height of the suitcase. I
found that 19in x 13in x 7 in = 1852 cubic inches, so the total
volume was 1852 cubic inches.
4. Ana’s reasoning is correct. She will have enough room to t all of
that and more because the volume of what she wants to pack is
smaller than the volume of her suitcase. The inequality I can use to
show this is 1852 cubic inches 1600 cubic inches
5. Ana assumed she would be on the trip for 6 days. I found this by
setting up the equation 250x = 1500. I then divided 250 into 1500
to get the number of days, 6, that Ana would be on her trip.
MATHEMATICS PERFORMANCE TASKS 99 Christie Wainwright