Measuring length with units

Mathematics · Measurement · ages 5-6

Name ______________________ Date ____________

Which tool measures length in centimetres?
- A cup
- A ruler
- A clock
A ribbon is 10 cm long. You cut off 4 cm. How many centimetres are left?
Answer: ______________
A pencil is 9 cm long. A crayon is 6 cm long. Which is longer?
- Neither has length
- The pencil
- The crayon
- They are equal
Count the cubes lined up next to the pencil. How long is the pencil?
- 5 cubes
- 4 cubes
- 6 cubes
A plant is 11 cm tall. It grows 3 cm more. How tall is it now?
Answer: ______________
A book is 5 cubes wide. A box is 7 cubes wide. How many cubes wider is the box?
Answer: ______________
Which is the correct way to record a length?
- cm
- long
- 12 cm
- 12
Ben measured his desk with cubes and got 9. How should he record it?
- 9 cubes
- 9
- cubes 9
Lily used big blocks for one table and small cubes for another. Both counts were 6. Are the tables the same length?
- Yes, both are 6
- No, the units were different sizes
- Yes, because cubes are always the same
Two children measure the same table. Amir uses big cubes and gets 5. Bella uses small cubes and gets 9. Why?
- Amir counted wrong
- Tables change size
- Cubes cannot measure
- They used different sized units

Answer key

For grown-ups. Fold this page away before handing over the rest.

A ruler · A ruler has centimetre marks along it, like a number line.
6 · 10 minus 4 equals 6 cm.
The pencil · 9 cm beats 6 cm.
5 cubes · Count each cube once: 1, 2, 3, 4, 5. The pencil is 5 cubes long.
14 · 11 plus 3 equals 14 cm.
2 · 7 minus 5 equals 2 cubes.
12 cm · A record needs a number and a unit.
9 cubes · Always write the number with its unit, like 9 cubes.
No, the units were different sizes · Big blocks cover more space than small cubes, so 6 big blocks is a longer table.
They used different sized units · Bigger units give a smaller count. The table did not change.