1. Rounding Revision

2. Rounding to the nearest Whole Number
Round 5·2 to the nearest whole number.
1) Draw a number line between 5 and 6
2) Place 5·2 on the number line
3) Is 5·2 closer to 5 or 6?
The answer is 5
0·8
0·2 5
5·1 6
5·2
5·3
5·4
5·5
5·6
5·7
5·8
5·9

3. Rounding to the nearest Whole Number
Round 5·6 to the nearest whole number.
1) Draw a number line between 5 and 6
2) Place 5·6 on the number line
3) Is 5·6 closer to 5 or 6?
The answer is 6
0·4
0·6 5
5·1 6
5·2
5·3
5·4
5·5
5·6
5·7
5·8
5·9

4. Rounding to the nearest Whole Number
Round 5·5 to the nearest whole number.
1) Draw a number line between 5 and 6
2) Place 5·5 on the number line
3) Is 5·5 closer to 5 or 6?
4) If the answer is in the middle we round up.
0·5 5
5·1 6
5·2
5·3
5·4
5·5
5·6
5·7
5·8
5·9
The answer is 6

5. Rounding to the nearest 10
Round 72 to the nearest whole number.
1) Draw a number line between 70 and 80
2) Place 72 on the number line
3) Is 72 closer to 70 or 80?
The answer is 70 8 2

6. Rounding to the nearest 10
Round 78 to the nearest whole number.
1) Draw a number line between 70 and 80
2) Place 78 on the number line
3) Is 78 closer to 70 or 80?
The answer is 80 2 8

7. Rounding to the nearest 10
Round 75 to the nearest 10.
1) Draw a number line between 70 and 80
2) Place 75 on the number line
3) Is 75 closer to 70 or 80?
4) If the answer is in the middle we round up.
The answer is 80 5

8. Rounding to the nearest 100
Round 533 to the nearest 100.
1) Draw a number line between 500 and 600
2) Place 533 on the number line
3) Is 533 closer to 500 or 600?
The answer is 500 67 33
500
510
600
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590

9. Rounding to the nearest 100
Round 578 to the nearest 100.
1) Draw a number line between 500 and 600
2) Place 578 on the number line
3) Is 578 closer to 500 or 600?
The answer is 600 22 78
500
510
600
520
530
540
550
560
570
580
590

10. Rounding to the nearest 100
Round 550 to the nearest 100.
1) Draw a number line between 500 and 600
2) Place 550 on the number line
3) Is 550 closer to 500 or 600?
4) If the answer is in the middle we round up.
The answer is 600 50
500
510
600
520
530
540
550
560
570
580
590