Our book talks about phonograph records... we needed to have a discussion about what a phonograph record is... Then we discussed what the cost of $7.98 would round to? We decided that $8 would be a good rounded number.
A general rule:
We underline the place we are rounding to and look to the number to its right. If the number is 5 or greater we round our underlined number up one and put zeros after it...
32, 567
rounded to the nearest ten thousand --> 30,000
rounded to the nearest thousand --> 33,000
rounded to the nearest hundred --> 32,600
rounded to the nearest ten --> 32,570
Rounding Decimals becomes a similar process BUT there are a few differences:
4.8637
rounded to the nearest thousandth --> 4.864
rounded to the nearest hundredth --> 4.86
rounded to the nearest tenth --> 4.9
rounded to the nearest unit 5
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