To solve the problem of measuring the lengths of the objects using the given units (mm), we need to carefully observe each object's position relative to the ruler and determine its length in millimeters. Let's go through each object step by step:
---
Step 1: Measure the pencil
- The pencil starts at the 0 mm mark on the ruler.
- The tip of the pencil ends just before the 12 cm mark.
- Since the ruler is marked in millimeters, the length of the pencil is approximately
120 mm.
Answer for 1:
$$
\boxed{120}
$$
---
Step 2: Measure the yellow object
- The yellow object starts at the 0 mm mark on the ruler.
- The end of the yellow object aligns with the 4 cm mark.
- Therefore, the length of the yellow object is
40 mm.
Answer for 2:
$$
\boxed{40}
$$
---
Step 3: Measure the crayon
- The crayon starts at the 0 mm mark on the ruler.
- The tip of the crayon ends just before the 7 cm mark.
- Therefore, the length of the crayon is approximately
70 mm.
Answer for 3:
$$
\boxed{70}
$$
---
Step 4: Measure the battery
- The battery starts at the 0 mm mark on the ruler.
- The end of the battery aligns with the 6 cm mark.
- Therefore, the length of the battery is
60 mm.
Answer for 4:
$$
\boxed{60}
$$
---
Step 5: Measure the paperclip
- The paperclip starts at the 0 mm mark on the ruler.
- The end of the paperclip aligns with the 3 cm mark.
- Therefore, the length of the paperclip is
30 mm.
Answer for 5:
$$
\boxed{30}
$$
---
Final Answers:
1. Pencil:
120 mm
2. Yellow object:
40 mm
3. Crayon:
70 mm
4. Battery:
60 mm
5. Paperclip:
30 mm
$$
\boxed{120, 40, 70, 60, 30}
$$
Parent Tip: Review the logic above to help your child master the concept of measuring centimeters worksheet.
