You only have to add 1 if you're rounding up.
Round 11.3 and 11.7 to the nearest whole number.
11.3 rounds down, so you just zero out the 3 and you are left with 11.
11.7 rounds up. If you zero out the 7, you're left with 11. But 11.7 is closer to 12 than 11, so you have to add 1.
-- If the place to the right of the place named contains a digit larger than 4, then add ' 1 ' to the digit in the place named. If not, then don't. -- Discard all digits to the right of the place named.
you can line up the decimals
Numbers of a value of 5 or more round up and add 1 to the next column. Numbers of value 4 or les are ignored. So...2.30259 becomes2.30262.3032.30
To add 22222222222222 and 66669999, you align the numbers vertically by place value. Starting from the right, you add the digits in each place value column. In this case, when you add the numbers together, you get 22222288892221. This sum represents the result of adding 22222222222222 and 66669999.
If you treat them as positives and find the difference, which is 0.8, that is the positive value. That is then the value when you add the 9.4 to the negative 8.6 which are given. So 0.8 is the answer.
-- If the place to the right of the place named contains a digit larger than 4, then add ' 1 ' to the digit in the place named. If not, then don't. -- Discard all digits to the right of the place named.
-- If the digit to the right of the underlined one is 4 or less, then discard everything to the right of the underlined one. -- If the digit to the right of the underlined one is 5 or more, then add ' 1 ' to the underlined digit, and discard everything to the right of it.
6000
Place Value Charts help you because they put the decimal in the right place.
explain why it is important to line up decimal numbers by their place value when you add or subtract them
You have 1.55 and you want to round to the first place. So add 0.05 as follows 1.05 0.05 ____ 1.10 ____ And the answer is 1.1 You always add a number preceded by as amny zeros as required followed by a 5 to the right of the position to which you want to round off and then truncate the entire answer to the required precision (or place)
you can line up the decimals
Numbers of a value of 5 or more round up and add 1 to the next column. Numbers of value 4 or les are ignored. So...2.30259 becomes2.30262.3032.30
604.0
Well, honey, if you want to round 465 to the nearest ten, you just look at the digit in the tens place, which is 6. Since 6 is greater than 5, you round up. So, 465 rounded to the nearest ten is 470. Voila!
Equate the coefficients and subtract or add to find the value of the the given unknown variables.
When you round up to the nearest 100, you are finding the closest multiple of 100 that is greater than or equal to the given number. To round up to the nearest 100, you look at the digit in the hundreds place. If the digit in the tens or ones place is 5 or greater, you add 1 to the hundreds place and replace all other digits with zeros. For example, rounding up 345 to the nearest 100 would give you 400.