Change pack
Lintel
Aug 10 - 16
25 questions
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1.
Number
85 is rounded to the nearest integer. What is the error interval?
Answer: 84.5 ≤ x < 85.5
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2.
Algebra
Expand: (x - 4)(x - 7)
Answer: x² - 11x + 28
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3.
Geometry
A circle has area 254.5cm². Find its radius (dp)
Answer: 9cm
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4.
Ratio
Express 63 as a percentage of 173
Answer: 36.42%
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5.
Statistics
Find the mean, median and range of: 86, 63, 39, 32, 31, 30, 41
Answer: Mean = 46, Median = 39, Range = 56
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1.
Number
A value is 79.4 (to dp). State the error interval
Answer: 79.35 ≤ x < 79.45
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2.
Algebra
Expand: (x + 4)(x - 3)
Answer: x² + x - 12
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3.
Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm²
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4.
Ratio
Express 56 as a percentage of 140
Answer: 40%
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5.
Statistics
Find the mean, mode, median and range of: 24, 24, 35, 19, 39
Answer: Mean = 28.2, Mode = 24, Median = 24, Range = 20
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1.
Number
96 is rounded to the nearest integer. What is the error interval?
Answer: 95.5 ≤ x < 96.5
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2.
Algebra
Expand: (x + 8)(x - 6)
Answer: x² + 2x - 48
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3.
Geometry
A circle has area 78.5cm². Find its radius (dp)
Answer: 5cm
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4.
Ratio
Express 39 as a percentage of 130
Answer: 30%
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5.
Statistics
Find the mean, mode, median and range of: 20, 20, 35, 48, 26
Answer: Mean = 29.8, Mode = 20, Median = 26, Range = 28
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1.
Number
A value is 40.6 (to dp). State the error interval
Answer: 40.55 ≤ x < 40.65
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2.
Algebra
Expand: (x - 2)(x - 3)
Answer: x² - 5x + 6
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3.
Geometry
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm²
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4.
Ratio
Express 27 as a percentage of 101
Answer: 26.73%
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5.
Statistics
Find the mean, median and range of: 35, 98, 41, 46, 41, 77, 13, 42, 23
Answer: Mean = 46.2, Median = 41, Range = 85
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1.
Number
A value is 88.3 (to dp). State the error interval
Answer: 88.25 ≤ x < 88.35
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2.
Algebra
Expand: (x - 3)(x - 5)
Answer: x² - 8x + 15
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3.
Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm²
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4.
Ratio
47 out of 97 students passed. What percentage passed?
Answer: 48.5%
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5.
Statistics
Find the mean, mode, median and range of: 25, 24, 14, 24, 32
Answer: Mean = 23.8, Mode = 24, Median = 24, Range = 18