© 2007 M. Tallman

Look right next door. 3. Find your number. 7 Round to the nearest one (units). 4 Step 1: Circle the digit in the place that you must round to. Step 2: Draw an arrow to the place on the right.

© 2007 M. Tallman or less, just ignore.. 4 Step 1: Circle the digit in the place that you must round to. Step 2: Draw an arrow to the place on the right. Step 3: If the number is four or less, then the circled number stays the same. Step 4: All numbers to the right of the circled number become zeros, or disappear. 3 is less than 4 Just Ignore! Round to the nearest tenth.

© 2007 M. Tallman 4.37 rounded to the nearest one (unit) is… is closer to 4 on the number line.

© 2007 M. Tallman Look right next door. 8. Step 1: Circle the digit in the place that you must round to. Step 2: Draw an arrow to the place on the right. Find your number. Round to the nearest one (units). 2

803 4 or less, just ignore.5 or more, add 1 more. Step 1: Circle the digit in the place that you must round to. Step 2: Draw an arrow to the place on the right. Step 3: If the number is four or less, then the circled number stays the same. Step 4: If the number is 5 or greater, then add 1 to the circled number. Step 5: All numbers to the right of the circled decimal number become zeros, or disappear. 8 is not less than = 3. 2 Round to the nearest one (units).

© 2007 M. Tallman 2.8 rounded to the nearest one (unit) is… is closer to 3 on the number line.

© 2007 M. Tallman = 22 Step 1: Rounding is always first. Decide which place to round to. Step 2: Round each addend to the nearest whole number. The actual answer is 22.2, so our estimation is pretty accurate. Step 3: Now you can add 17 and 5 mentally.

© 2007 M. Tallman = 13 Step 1: Rounding is always first. Decide which place to round to. Step 2: Round each addend to the nearest whole number. The actual answer is 12.5, so our estimation is pretty accurate. Step 3: Now you can add 10 and 3 mentally.

© 2007 M. Tallman = 49 Step 1: Rounding is always first. Decide which place to round to. Step 2: Round each addend to the nearest whole number. The actual answer is 49.1, so our estimation is pretty accurate. Step 3: Now you can add 43 and 6 mentally.

© 2007 M. Tallman $ = = $ $ Estimate Each Sum = $ $7.00 =

© 2007 M. Tallman $ $5.00 $ $9.00+ = = $ $ $ $102.5 Estimate Each Sum = $ $29.00 =

© 2007 M. Tallman $ $ $ $32.00 $ = = $ $ $2.45 Estimate Each Sum $ $15.00 = =