What is the rule for rounding decimals?
Rounding decimals is the same as rounding whole numbers except that the digits to the right of the given place value are dropped and not replaced with zeros: 1) If the digit to the right of the given place value is less than 5, that digit and all digits to the right are dropped.
Should .5 be rounded up or down?
The rule you need to remember is: “If the digit is less than 5, round the previous digit down; if it’s 5 or greater, round the previous digit up.” To round a digit down means to leave it unchanged; to round a digit up means to increase it by one unit.
What’s the best way to round up decimals?
To round decimals, first find out the place you want to round to and look at the number in the place to its right. If this number is greater than or equal to five, round up by adding one to your place value. If it’s less than five, round down by leaving your place value as is.
How many decimal places are in round 249.50?
Round 249.5046 to 1 and 2 decimal places. Notice that 249.50 = 249.5. However, as the question asked for 2 decimal places both numbers are left. Round 0.9583 to 1 and 2 decimal places. Round 598.053 to 1 and 2 decimal places.
How do you round a number to a whole number?
Rounding Instructions Understand the idea of decimal places. Find the decimal place you need to round to. Look at the number in the space to the right. If this number is greater than or equal to five, round up. If this number is less than five, round down. Use the same technique to round to a whole number. Look out for special instructions.
How to round a number to the nearest thousandth?
For example, if you are asked to round to the nearest thousandth in the number 12.9889, you would start by finding the thousandths place. Counting from the decimal point, the spaces to the right represent tenths, hundredths, thousandths, and ten-thousandths, so the second “8” (12.98 8 9) is the one you want.