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Example:
4
x 2
8
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Example: What is the area of a circle whose diameter is 10 cm?
Given: Diameter(d) = 10cm; So, Radius(r) = Diameter/2 = 10/2 = 5cm
Area of a circle: πr2 = π x 52 = π x 25 = 25π sq cm
Given: Diameter(d) = 10cm; So, Radius(r) = Diameter/2 = 10/2 = 5cm
Area of a circle: πr2 = π x 52 = π x 25 = 25π sq cm
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Example: 3 + ? = 6
3
5
2
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Example:
14 + 2 = ___
13
16
12
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Example: √4
2
3
4
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Example: Multiples of 2
6
3
4
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Example: What is 36050 rounded to the nearest ten thousand?
37000
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Example: 22
21
2
20
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Example: 4
5
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Example: Find the median of the following: 1, 2, 1, 5, 5
Step 1: Sort the list → 1, 1, 2, 5, 5
Step 2: Count of numbers listed → 5 (odd)
Step 3: So the middle number is (count+1)/2 → (5+1)/2 → 3rd number. Therefore, the median is 2.
Step 1: Sort the list → 1, 1, 2, 5, 5
Step 2: Count of numbers listed → 5 (odd)
Step 3: So the middle number is (count+1)/2 → (5+1)/2 → 3rd number. Therefore, the median is 2.
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3
5
6
4
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