Remember these rules when rounding to the nearest 10:
Consider the following examples:
66 -> 70 53 -> 50 199 -> 200 235 -> 240 92 -> 90 95 -> 100
Rules for rounding:
1. If the number in the ones column is 4 or less round down. Example: 42 ->
40.
2. If the number in the ones column is 5 or more round up. Example: 45 ->
50.
Special Case:
If you have a number like 495 you have to remember that it will have to round up to 500. Many times students are confused by this situation.
Here are a few more examples to help you out:
444 -> 450 671 -> 670 788 -> 790 123 -> 120 235 -> 240 133 -> 130 2344 -> 2340 1999 -> 2000 3995 -> 4000
What about 2220? What does it round off to the nearest 10? Here are a few examples to help you:
1330 -> 1330 1400 -> 1400 50 -> 50 2000 -> 2000 1900 -> 1900 10 -> 10
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