1. Using the Ruler: Measuring to the Nearest ½ Inch1
Using the Ruler: Measuring to the Nearest ½ Inch

2. Each inch is divided into 16 parts. 2 1
Each inch is divided into 16 parts.
In 4th grade, we learn to measure to the nearest half inch.

3. 1 4 3 4 1 2 1
We use the 1/4 inch marks to help us measure to the nearest ½ inch.

4. 1 4 3 4 1 2 1
If a line comes BEFORE the 1/4 inch mark, we round DOWN to the ½ inch mark.

5. 1 4 3 4 1 2 1
If a line comes AFTER the 1/4 inch mark, we round UP to the next ½ inch.

6. ? 1 2 ?
Measure the line to the nearest ½ inch.
1 ½ inches

7. ? 9 10 ?
Measure the line to the nearest ½ inch.
10 inches

8. ? 23 24 ?
Measure the line to the nearest ½ inch.
23 inches

9. ? 99
100 ?
Measure the line to the nearest ½ inch.
99 ½ inches

10. ? 19 20 ?
Measure the line to the nearest ½ inch.
20 inches

11. ? 43 44 ?
Measure the line to the nearest ½ inch.
43 ½ inches

12. ? 3 4 ?
Measure the line to the nearest ½ inch.
3 ½ inches

13. ? 26 27 ?
Measure the line to the nearest ½ inch.
26 ½ inches

14. ? 17 18 ?
Measure the line to the nearest ½ inch.
17 ½ inches

15. ? 86 87 ?
Measure the line to the nearest ½ inch.
87 inches

16. As you measure to the nearest ½ inch,
Awesome job!
Remember:
As you measure to the nearest ½ inch,
use the ¼ marks to help you round.
They’re just like the “5”.