2nd grade · Math · Unit 4 of 17
Measuring
Centimeters and meters
What your child practices
Measuring with a ruler from zero and choosing between centimeters and meters.
California Content Standards learning standard: 2.MD.1; 2.MD.3 · measuring and estimating lengths in centimeters and meters
How we explain it
Children can open this short lesson before they practice.
- Centimeters (cm) measure short lengths.
- Meters (m) measure long lengths.
- Line up the 0 on the ruler with one end.
Example: Would you measure a pencil in cm or m? A pencil is short. Short things use centimeters. Answer: cm
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Would you measure a crayon in centimeters or meters?
🖍️- centimeters
- meters
centimeters
Hint: Small things: centimeters (cm). Big things: meters (m). 1 meter is 100 centimeters.
Question 2
How long is the key?
🔑0123456789101112131415cm- 8 cm
- 9 cm
- 6 cm
8 cm
Hint: Start at 0. Count the centimeters to the end of the key.
Question 3
How long is the spoon?
🥄0123456789101112131415cm- 5 cm
- 10 cm
- 4 cm
4 cm
Hint: Start at 0. Count the centimeters to the end of the spoon.
Question 4
Would you measure a book in centimeters or meters?
📕- meters
- centimeters
centimeters
Hint: Small things: centimeters (cm). Big things: meters (m). 1 meter is 100 centimeters.
Question 5
How long is the caterpillar?
🐛0123456789101112131415cm- 7 cm
- 11 cm
- 6 cm
6 cm
Hint: Start at 0. Count the centimeters to the end of the caterpillar.
Question 6
Would you measure a playground in centimeters or meters?
🛝- meters
- centimeters
meters
Hint: Small things: centimeters (cm). Big things: meters (m). 1 meter is 100 centimeters.