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.
Example:
LCM (least common multiple) of 3 and 6
3
6
9
Example:
4
6
+
5
6
3
6
1
9
9
6
Example:
2
6
+
1
2
1
6
2
3
5
6
Example: What is 5346050 rounded to the nearest million?
5000000
Example: Rails in a railway track
perpendicular
parallel
Example:
PQ ∥ RS
FALSE
TRUE
Example:
4.123
8.301
2.198
Example:
5.522
4.451
6.218
Example: What is 3.6 rounded to the nearest whole number?