Similarity
Probability
Area and Perimeter
Fractions
Factors/Multiples
100
How are the perimeters of two similar figures related? Give an example.
The perimeter of the larger is is the scale factor multiplied by the perimeter of the smaller.
100
A bag contains 25 balloons: 15 red, 3 yellow, and 7 orange. What is the probability of choosing yellow?
3 out of 25
100
A square has a side length of 6 units. Find the area and perimeter.
Area is 36 square units. Perimer is 24 units.
100
1/2 + 3/4 = ?
5/4.
100
Find two proper factors of 76.
2 x 38 4 x 19 1
200
How are the areas of two similar figures related? Give an example.
The area of the larger is the square of the scale factor multiplied by the area of the smaller.
200
A bag contains 25 balloons: 15 red, 3 yellow, and 7 orange. What is the probability of not choosing a red balloon?
10 out of 25.
200
A juice can is about 2.25 inches in diameter. How would you find it's circumference?
Multiply 2.25 by pi.
200
5/10 - 2/5 = ?
1/10
200
Find all the factors of 171.
1 x 171 3 x 57 9 x 19
300
A rectangle is 3 inches by 5 inches. Find the measures of two similar rectangles.
6 x 10 9 x 15 12 x 20 etc.
300
A bag contains 25 balloons: 15 red, 3 yellow, and 7 orange. What is the probability of choosing a yellow or an orange balloon?
10 out of 25.
300
Give two rectangles that have 18 units as their perimeters but have different areas. Give the dimensions and the area of each shape.
2 x 7 with an area of 14. 4 x 5 with an area of 20. Any rectangle whose length and width add up to 9 work.
300
3/8 x 6/7 = ?
18/56 9/28
300
Find the least common multiple of 35 and 175.
175
400
A figure is copied at 125%. What is the scale factor?
1.25
400
A bag contains 25 balloons: 15 red, 3 yellow, and 7 orange. The number of balloons is doubled. What happens to the probability of choosing a red balloon?
The probability is the same.
400
Give two rectangles that have 25 square units as their area but have different perimeters. Give the dimensions and the aperimeter of each shape.
5 x 5 with a perimeter of 20. 1 x 25 with a perimeter of 52.
400
1 and 2/3 - 5/6 = ?
5/6
400
Find the greatest prime number less than 85.
79
500
What is the least number of sides you need to determine if two triangles are similar? What is the least number of angles you need to determine if two triangles are similar?
3 sides 2 angles
500
A bag contains 25 balloons: 15 red, 3 yellow, and 7 orange. How many yellow and orange balloons would you have to add to make the probability of choosing a red balloon 1/2?
1 yellow and 4 orange 2 yellows and 3 orange 3 yellows and 2 orange 4 yellows and 1 orange (other answers possible)
500
What are the dimensions of a rectangle with an area of 36 square units that has the smallest possible perimeter.
6 x 6.
500
5/7 divided by 2 and 1/3 = ?
15/49
500
Find the greatest common factor of 370, 222, and 148. You may use a calculator.
74
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