Probability - Home

Unit
9
19. Find the area of each figure.
a) a parallelogram with base 12 cm and height 7 cm
b) a triangle with base 16 cm and height 9 cm
20. Use 1-cm grid paper.
Sketch each figure.
a) a rectangle with perimeter 40 cm and area 91 cm 2
b) a parallelogram with area 45 cm 2
10
21. Here is a growing pattern made with regular hexagons.
Frame 1 Frame 2 Frame 3 Frame 4
a) Record the frame numbers and the perimeters in a table.
b) Draw a graph to display the data in the table.
c) Which frame has perimeter 30 units? 42 units?
d) Does any frame have perimeter 60 units? 70 units? Explain.
11
22. Suppose you put coloured tiles in a paper bag.
How many tiles of each colour would you put in the bag
so the probability of drawing blue is 25%, red is 40%,
green is 15%, and yellow is 20%?
Give three different answers.
23. Shawna rolled a number cube
labelled 1 to 6 one hundred times.
She recorded her results in a tally chart.
A classmate looked at Shawna’s results
and said, “In the next roll of the number cube,
it is unlikely the result will be 1.
It is probable the result will be 4.”
Do you agree with Shawna’s classmate?
Explain.
Cumulative Review Units 1–11 391