Rounding Numbers. Let’s Review the Rules 0 1 2 4 3 5 6 7 8 9 +0 +1.

1 Rounding Numbers ...
Author: Jessie Miles
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1 Rounding Numbers

2 Let’s Review the Rules 0 1 2 4 3 5 6 7 8 9 +0 +1

3 Underline place Value indicated Draw an arrow to The number behind The underlined number Using the rounding Wheel, find the Circled number Circle the number You drew an arrow to Everything to The right of the Underlined Number becomes 0 Everything to the Left of the underlined Number stays the same If the number is on +1, add 1 to The underlined number If the number is on the +0 side, add 0 to the underlined number

4 Let’s See An Example 345 Round to the hundreds place 1. Find and underline the place value. 345

5 Draw an arrow to the number behind the underlined number 345

6 Circle the number you drew the arrow to 3 45

7 Look on the rounding wheel Notice that 4 is on the +0 side. Add 0 to the underlined number 3 +0 3

8 Any number before the underlined number stays the same 345 We underlined the 3, so there are no numbers before our underlined number.

9 All numbers after the underlined number become 0 345 So this means when we added 0 to the 3 our answer was 3. Our answer should look like this 300

10 Let’s try another one 4,551 Round to the hundreds place Remember the flow chart Underline the number in the hundreds place 4,551

11 Draw an arrow and circle 4,5 5 1

12 Where is the circled number on your rounding wheel? 4,5 5 1 The circled 5 is on the +1 side of your wheel. Now add 1 to the underlined 5 5 +1 6

13 Now the underlined number has changed Everything to the left of the underlined number stays the same Everything to the right of the underlined number becomes 0 4,600

14 You Try One 56 Round to the tens place. Underline place value, draw an arrow and circle the number behind the underlined number, find the circled number on your rounding wheel 5 6

15 What next? 5 6 1.6 is on the +1 side. 2.Add 1 to the 5 3.5 +1 6 4. Any numbers to the left of the underlined number stay The same. Everything after the underlined number Becomes a 0 56=60