When adding two numbers together, it is sometimes necessary to round the result to the nearest ten. This is particularly usefule in math problems or when dealing with money. For example, to figure out how much change one should get back after a purchase. Knowing how to round numbers correctly can be an essential skill in everyday life.
To round a number to the nearest ten, one must look at the number to the right of the ones place. If the number is 5 or above, the number should be rounded up to the next ten. If the number is 4 or below, the number should be rounded down to the previous ten. This can be tricky when the number is in between, such as when the number is 8 or 9. In this case, it should be rounded up.
Let’s look at an example. If we add 259 and 372 together and round to the nearest ten, we get 631. We can then look at the number in the ones place, which is 1. Since 1 is below 4, we should round down, resulting in 630. To double check, we can subtract 1 from 630 and then round up to the nearest ten. This would result in 620, which is the original numbers added together (259+372 = 631).
Here is another example. If we add 559 and 372 together and round to the nearest ten, we get 931. We can look at the number in the ones place, which is 1. Since 1 is below 4, we should round down, resulting in 930. To double check, we can subtract 1 from 930 and then round up to the nearest ten. This would result in 920, which is the original numbers added together (559+372 = 931).
In conclusion, rounding a number to the nearest ten is a useful tool for everyday life. To do this, one must look at the number to the right of the ones place. If the number is 5 or above, the number should be rounded up to the next ten. If the number is 4 or below, the number should be rounded down to the previous ten. This can be seen in the examples of 259+372 = 630 and 559+372 = 930.
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