Here are the two most commonly-used sets of rounding rules: When performing measurements or calculations, you will often have to round the results.

A rounded number has about the same value as the number you start with, but it is less precise. When rounding a number, you first need to ask: what are you rounding it to?

Rounding Numbers are rounded for many reasons including ♦ Avoiding false precision eg 3.647382 mm ♦ Estimation required rather than precision ♦ Convenience (4 sf) (1 sf) (4 sf)

Step 1: Circle the place value of the digit to be. rounded. This is the roundi. Step 2: Look to the neighboring digit on t. Step 3: If the neighboring digit is less than five (0 - 4), keep the rounding digit …

UNDING TO 2 DECIMAL PLACES . _____ _____ _____ _____ _____ Draw an arrow to match . 6 → 0.93 9.398 → 9.40 Draw an arrow to match .

We show that there are terminating algorithms for computing exactly rounded values for the standard elementary functions, in any format and to any desired precision.

Find 256 on the number line and label it. Is 256 closer to 250 or 260? ___________________ What is 256 rounded to the nearest ten? ___________________ Find 731 on the number line and label it. Is …