COMPARING DECIMALS1. Line up the decimals.2. Fill in the empty spaces with zeroes.3. Start comparing at the highest place value.Example: 456.489 ____ 45.658947456.489000045.6589474 is larger than 0, so the first number is greater (>).
ROUNDING DECIMALS1. Underline the place value of the digit you are rounding to.2. Look to the RIGHT of the underlined digit.3. If the number is 5 OR MORE, RAISE THE SCORE of the underlined digit. 4 OR LESS, LET IT REST (the underlined digit.)4. Everything AFTER the underlined digit FALLS OFF.Example: Round 47.856 to the nearest tenth.1. Underline the tenths place. 47.856.2. Look to the digit to the right of the underlined digit (5).3. 5 or more means to raise the score, so the 8 becomes a 9.4. The 5 and the 6 fall off.Your answer is: 47.9ESTIMATING DECIMALS1. Remember, to estimate simply means to ROUND to the nearest whole number.2. Underline the ONES place and use the TENTHS place to round.Example: $56.78$56.78The 7 in the tenths place tells me to RAISE THE SCORE.The 6 becomes a 7. The number before the underlined digit stays the same and everything after falls off.So, $56.78 estimates to $57