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Fractions
Similarity
Percents
Area and Perimeter
100
1/2 + 3/4 =
What is 5/4 or 1 1/4.
100
How are the perimeters of two similar figures related? Give an example.
The perimeter of the larger is the scale factor times the perimeter of the smaller figure.
100
66% of 1000 =
What is 660
100
A square has a side length of 6 units. Find the area and perimeter.
Area = 36 square units Perimeter = 24 units
200
2 - 2/5 =
What is 8/5 or 1 3/5
200
How are the areas of two similar figures related? Give an example.
The area of the larger figure is the square of the scale factor times the area of the smaller figure.
200
4/10 as a percent is...
What is 40%
200
A juice can is about 2.25 inches in diameter. What is its circumference?
Approximately 7.07 inches
300
3/8 * 6/7 =
What is 18/56 or 9/28.
300
Rectangle A measures 3 inches by 5 inches. Find the measures of two similar rectangles.
Examples: 6 x 10 9 x 15 12 x 20
300
If 50% of a number is 20, what is 75% of that number?
What is 30.
300
Draw two shapes with perimeters of 18 units but different areas. Give the area of each shape.
Any rectangle whose length and width add up to 9 units will work.
400
1 2/3 - 5/6 =
What is 5/6
400
A figure is put in a copier using a copier size factor of 125%. What scale factor and ratio of similarity relate the copy to the original figure?
What is 5/4
400
Your bill for lunch is $26 and you would like to leave a 10% tip. What is the tip amount that you will leave?
What is $2.60
400
Draw two shapes with areas of 25 square units but different perimeters. Give the perimeter of each shape.
5 x 5 = 25 square units, perimeter of 20 units 25 x 1 = 25 square units, perimeter of 52 units
500
5/7 divided by 2 1/3 =
What is 15/49
500
What is the minimum number of side and/or angle measurements needed to check the similarity of two triangles?
If two corresponding angles have the same measure, the third angle will have the same measure and the two triangles will be similar. If all three pairs of corresponding sides have the same ratio, the triangles are similar.
500
60% of 30 =
What is 18
500
Find the rectangle with an area of 36 square units and whole-number side lengths that has the smallest perimeter possible.
6 x 6