Let's solve each part of the worksheet step by step. The task is to
measure each object using the ruler shown and
round to the nearest centimeter.
---
a. Pen
- The pen starts at
0 cm and ends just before the
14 cm mark.
- Looking closely, the tip of the pen is
between 13 and 14 cm, but closer to
14 cm.
- Since it’s
closer to 14 than to 13, we round up.
✔ Answer: 14 cm
---
b. Pushpin (or Thumbtack)
- The pushpin starts at
0 cm and ends just after the
2 cm mark.
- The end is
slightly past 2 cm, but not enough to reach 3 cm.
- It’s
closer to 2 cm than to 3 cm.
✔ Answer: 2 cm
---
c. Crayon
- The crayon starts at
0 cm and ends between
6 and 7 cm.
- The tip appears to be
just past the 6 cm mark, but still
closer to 6 cm than to 7 cm.
- So we round down.
✔ Answer: 6 cm
---
d. Glue Stick
- The glue stick starts at
0 cm and ends just after the
5 cm mark.
- It extends slightly beyond 5 cm, but not enough to reach halfway to 6 cm.
- So it’s
closer to 5 cm than to 6 cm.
✔ Answer: 5 cm
---
✔ Final Answers:
a.
14 cm
b.
2 cm
c.
6 cm
d.
5 cm
---
🔍 Explanation:
To measure correctly:
1. Align the
left end of the object with the
0 cm mark.
2. Look at where the
right end of the object falls on the ruler.
3. If it’s
less than halfway between two numbers, round
down.
4. If it’s
halfway or more, round
up.
5. In this case, all measurements are rounded to the
nearest whole centimeter.
Let me know if you'd like a visual guide or printable version!
Parent Tip: Review the logic above to help your child master the concept of centimeter worksheet.
