| From classbrain.com|
By Sarah Lane
May 29, 2004, 12:26
Topic: Rounding Numbers
i don't know how to round very well. please help me.
When learning how to round numbers, its important to look at the very last number.
For example, lets start with the number 502.
Whats the very last number?
Its 2 right?
And whats the very last number of 507?
Its 7 right?
This is the most important part of rounding. Once you have decided what the last number is, the next question is do you round up or down?
The rule is this, if the last number is 1,2,3, or 4, then you round down.
If the last number is 5,6,7,8, or 9, then you round up.
So, if we were rounding 502, then we already know that the last number is 2. This means we round down. The number 502 rounded to the nearest tenth would be 500.
If we were rounding the number 507 we already know that the last number is 7. This means we round up. The number 507 rounded to the nearest tenth would be 510.
If you have any more questions, dont be afraid to ask your teacher for extra help. Thats what they are there for and trust me, they wont mind! :-)
Here are some flash card sites that will help you learn:
My Schoolhouse Rounding
Rounding Decimals/ Whole Numbers
Rounding Decimals Flash Cards
(For our members we have an entire set of math worksheets just click here!)
Learn more about rounding numbers with the help of Google
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