Metric Units: Estimate & Measure
Which Unit Would You Use?
Circle the best unit to measure each object.
Length of your pencil
Distance to the next town
Height of a door
Width of a book
More Unit Choices
Circle the best unit.
Mass of a pencil
Mass of a person
Water in a cup
Water in a swimming pool
Match Objects to Measurements
Draw a line to match.
Match More Objects
Draw a line to match.
Sort by Unit
Sort these items into the correct measurement unit column.
Sort by Mass Unit
Sort these items.
Estimate the Length
Circle the best estimate.
Length of a school desk
Height of a Year 3 student
Length of a car
Mass of an apple
More Estimates
Circle the best estimate.
Width of a classroom
Mass of a cat
Water in a bathtub
Height of a house
Which Is Longer?
Circle the longer measurement.
Which is longer?
Which is longer?
Which is heavier?
Which holds more?
More Comparisons
Circle the correct answer.
Which is longer: 150 cm or 1 m?
Which is heavier: 2 kg or 1500 g?
Which holds more: 3 L or 2500 mL?
Estimate Then Measure
Estimate the length first, then measure with a ruler.
Your pencil — Estimate: ___ cm, Measured: ___ cm
This worksheet (width) — Estimate: ___ cm, Measured: ___ cm
Your hand span — Estimate: ___ cm, Measured: ___ cm
A book — Estimate: ___ cm, Measured: ___ cm
Match Conversions
Match.
Convert and Compare
Answer each question.
How many centimetres in 1 metre? ___
How many metres in 1 kilometre? ___
How many grams in 1 kilogram? ___
How many millilitres in 1 litre? ___
Conversion Problems
Convert these measurements.
2 m = ___ cm
3 kg = ___ g
5 L = ___ mL
150 cm = ___ m and ___ cm
Measurement Word Problems
Solve each problem.
A table is 120 cm long. A desk is 90 cm long. How much longer is the table?
A bag of apples weighs 2 kg. A bag of oranges weighs 1500 g. Which is heavier?
A bottle holds 750 mL. How many bottles to make 3 litres?
True or False — Measurement
Circle True or False.
100 cm = 1 m
1 kg = 100 g
1000 mL = 1 L
1 km = 100 m
Home Activity: Measure Around the House
Find things to measure at home!
- 1Use a ruler to measure 5 objects in centimetres. Record your results.
- 2Estimate the height of a door in metres. Then measure to check.
- 3Weigh some fruit. How many grams does each piece weigh?
- 4How much water does your favourite cup hold? Estimate in millilitres.
Choose the Right Unit — Length
Circle the best unit.
Thickness of a coin
Length of a playground
Width of your thumbnail
Length of a marathon race
Choose the Right Unit — Mass and Capacity
Circle the best unit.
Mass of a grain of rice
Water in a swimming pool
A bag of sugar
A teaspoon of water
Match Measurements to Objects — Set A
Match.
Match Measurements to Objects — Set B
Match.
Convert Measurements — Set A
Fill in the blank.
3 m = ___ cm
500 cm = ___ m
4 km = ___ m
2500 m = ___ km and ___ m
Convert Measurements — Set B
Fill in the blank.
5 kg = ___ g
3000 g = ___ kg
6 L = ___ mL
2500 mL = ___ L and ___ mL
Estimate and Measure — Set A
Estimate, then measure or calculate.
The length of this page: estimate ___ cm, actual ___ cm
The width of your desk: estimate ___ cm, actual ___ cm
The length of your foot: estimate ___ cm, actual ___ cm
Estimate and Measure — Set B
Estimate, then measure.
The length of your arm span: estimate ___ cm, actual ___ cm
The height of your chair: estimate ___ cm, actual ___ cm
The distance across the room: estimate ___ m, actual ___ m
Measurement Word Problems — Set A
Solve.
A bench is 2 m 40 cm long. A table is 180 cm long. Which is longer? By how much? ___
A bottle holds 750 mL. How much do 4 bottles hold in total? ___ mL = ___ L ___mL
Measurement Word Problems — Set B
Solve.
A bag of rice weighs 2 kg 500 g. Another weighs 1 kg 750 g. What is the total mass? ___
A swimming pool holds 250,000 L. How many kilolitres is that? ___
Measurement Word Problems — Set C
Solve.
Dad drives 4.5 km to work. How far does he travel to and from work each day? ___
A tank holds 50 L. It is 3/5 full. How many litres are in it? ___
A piece of ribbon is 3 m long. It is cut into 4 equal pieces. How long is each? ___
Compare Measurements — Set A
Circle the correct answer.
Which is longer: 250 cm or 3 m?
Which is heavier: 1500 g or 1 kg?
Which holds more: 2.5 L or 2000 mL?
Which is farther: 3 km or 2800 m?
Compare Measurements — Set B
Circle True or False.
200 cm = 2 m
1 kg = 10 g
1 L = 1000 mL
1 km = 100 m
Sort: Length Units — Smallest to Largest
Sort these unit names from smallest to largest unit of length.
Sort: Mass Units — Smallest to Largest
Sort these mass units.
Measurement Number Bonds — Length
Fill in the missing measurement.
Measurement Number Bonds — Capacity
Fill in the missing capacity.
Object Lengths Tally
Count the tallies for objects measured in class.
| Item | Tally | Total |
|---|---|---|
Under 10 cm | ||
10–30 cm | ||
30–100 cm | ||
Over 1 m |
Favourite Measurement Activity Graph
Each symbol = 1 student. Answer the questions.
| Length | |
| Mass | |
| Capacity | |
| All equally |
Which activity was most popular?
How many more students liked length than mass?
How many students were surveyed?
Measurement Investigation: Hands and Feet
Investigate body measurements.
Measure your hand span (thumb to little finger): ___ cm
Measure the length of your foot: ___ cm
How many hand spans wide is your desk? ___
Estimate how many feet long your classroom is: ___ feet ≈ ___ m
Measurement Journal
Record and reflect on measurements.
The longest thing I measured today: ___ and it was ___ long.
The heaviest thing I estimated: ___ was about ___ kg.
Something that surprised me about measurement: ___
Perimeter Using Measurement
Calculate the perimeter.
A square with sides 5 cm. Perimeter = ___
A rectangle 8 cm long and 3 cm wide. Perimeter = ___
A square with sides 12 m. Perimeter = ___
Area Introduction
Count the squares to find the area of each shape.
A rectangle 4 cm long and 3 cm wide: Number of squares = ___ Area = ___ cm²
A square with sides 5 cm: Area = ___ cm²
A rectangle 6 cm × 2 cm: Area = ___ cm²
Area vs Perimeter
Circle the correct answer.
Perimeter is...
Area is...
Perimeter is measured in...
Area is measured in...
Measurement Conversions Challenge
Complete the conversions.
4 m = ___ cm
2.5 km = ___ m
3.5 kg = ___ g
2.75 L = ___ mL
Measurement Problems — Area and Perimeter
Solve.
A garden bed is 5 m long and 3 m wide. What is its perimeter? ___ What is its area? ___
A room is 4 m × 4 m. What is the area of carpet needed? ___
Match Measurement Tools to Attributes
Match the tool to what it measures.
Choose the Best Tool
Choose the best measuring tool for each task.
Measuring the width of this page: ___
Measuring the mass of a potato: ___
Measuring the length of the classroom: ___
Measuring how much water fits in a bucket: ___
Sort: Longer or Shorter Than 1 Metre?
Sort each object.
Home Activity: Measurement in Nature
Measure things in your garden or park!
- 1Measure the circumference of a tree trunk using string and a ruler.
- 2Measure the height of 5 different plants.
- 3Find the length and width of your backyard. Calculate its perimeter.
- 4Collect 5 leaves. Order them by length.
Convert Centimetres and Metres
Fill in the missing measurement.
Parts of 1 Kilogram
Fill in the missing weight.
Counting in Centimetres
Fill in the missing lengths.
Counting in Millilitres
Fill in the missing capacities.
Which Unit Fits Best? — Length
Circle the best unit.
The length of a pencil
The distance from Sydney to Melbourne
The width of a finger
The height of a building
Which Unit Fits Best? — Mass
Circle the best unit.
The mass of a feather
The mass of a truck
The mass of an apple
The mass of a book
Which Unit Fits Best? — Capacity
Circle the best unit.
The capacity of an eyedropper
The capacity of a bathtub
The capacity of a teaspoon
The capacity of a swimming pool
Estimate: Reasonable or Unreasonable?
Circle reasonable or unreasonable.
A classroom is about 8 metres wide.
A pencil is about 15 kilometres long.
A cat weighs about 4 kilograms.
A bottle of water holds about 600 millilitres.
Match Objects to Measurements
Match each object to its most likely measurement.
Match Conversions
Match each measurement to its equivalent.
Sort: Longer or Shorter Than 30 cm?
Sort each object.
Sort: Light (under 1 kg) or Heavy (1 kg or more)?
Sort each item.
Count Centimetre Units
Each pencil = 5 cm. Write the total length.
Estimating Lengths
Estimate then measure each object.
Object: your hand span Estimate: ___ cm Actual: ___ cm
Object: your foot length Estimate: ___ cm Actual: ___ cm
Object: a book width Estimate: ___ cm Actual: ___ cm
Estimating Mass
Estimate, then weigh if possible.
Object: a drink bottle Estimate: ___ g Actual: ___ g
Object: your lunch bag Estimate: ___ g Actual: ___ g
Object: a textbook Estimate: ___ g Actual: ___ g
Estimating Capacity
Estimate the capacity of each container.
A mug: about ___ mL
A kitchen sink: about ___ L
A juice box: about ___ mL
A swimming pool: about ___ kL
Perimeter Calculations
Calculate the perimeter of each shape.
Square with side 5 cm. Perimeter = ___
Rectangle 8 cm × 3 cm. Perimeter = ___
Triangle with sides 4 cm, 6 cm, 5 cm. Perimeter = ___
Convert Units
Convert each measurement.
2 metres = ___ cm
350 cm = ___ m ___ cm
2.5 kg = ___ g
1500 mL = ___ L ___ mL
Compare and Order
Order these measurements from smallest to largest.
2 m, 150 cm, 250 cm, 1 m → ___
500 g, 2 kg, 750 g, 1.5 kg → ___
1 L, 750 mL, 1500 mL, 500 mL → ___
Tally: Measurement Estimates — Correct?
Record how many estimates were within range.
| Item | Tally | Total |
|---|---|---|
Within 1 cm | ||
Within 5 cm | ||
Out by more than 5 cm |
Lengths of Objects Measured in Class
This graph shows lengths in centimetres.
| Pencil | |
| Book | |
| Desk | |
| Whiteboard |
Which object is longest?
How much longer is the desk than the book?
What is the total length of the pencil and book?
Measurement Reflection
Reflect on what you know about measuring.
Why do we use standard units of measurement? ___
Name 3 tools used to measure length, mass and capacity: ___
Describe a time when you needed to estimate rather than measure exactly: ___
Home Activity: Metric Chef
Use metric units in the kitchen!
- 1Measure 250 mL of water in a measuring jug. Compare with 500 mL.
- 2Weigh a piece of fruit on kitchen scales. How close was your estimate?
- 3Measure the length of your kitchen bench in metres and centimetres.
- 4Help cook a recipe. Notice all the measurements used.
Choose the Best Unit
Circle the most sensible metric unit to measure each thing.
Distance from Sydney to Melbourne
Weight of a grape
Amount of water in a swimming pool
Length of your pencil
Metric Conversion Sequences
Fill in the missing values in each metric sequence.
Measurement Bonds
Complete each measurement bond.
Match Estimate to Object
Match each object to the best estimate of its length or weight.
Measurement Investigation
Estimate then measure objects in your environment.
Object 1: ___ Estimate: ___ Actual: ___ Difference: ___
Object 2: ___ Estimate: ___ Actual: ___ Difference: ___
Which estimate was closest? What helped you estimate well?
Convert and Compare
Convert each measurement and compare.
3 km = ___ m. Is that more or less than 2,800 m? ___
2.5 kg = ___ g. Is that more or less than 2,200 g? ___
1.5 L = ___ mL. Is that more or less than 1,800 mL? ___
Sort: Which Unit Would You Use?
Sort each measurement into the correct unit column.
Estimated vs Actual Measurements
Record how close each estimate was.
| Item | Tally | Total |
|---|---|---|
Within 1 cm | ||
Within 5 cm | ||
Within 10 cm | ||
More than 10 cm off |
Design a Mini Garden
Plan a vegetable garden using metric units.
Garden length: ___ m Garden width: ___ m Perimeter: ___ m
How many rows of 30 cm spacing can you fit in the length?
How much water (in mL) will each plant need per day? Total for 10 plants?
Home Activity: Body Measurement Day
Measure your body using metric units!
- 1Measure your height in centimetres. Convert to metres and centimetres.
- 2Measure the length of your foot and hand span.
- 3Measure how far you can jump from standing still. Record in metres and centimetres.
- 4Estimate your weight in kilograms. Ask a parent to help you check.
Metric Prefixes
Circle the correct meaning of each metric prefix.
Kilo- means...
Centi- means...
Milli- means...
1 kilometre = ___ metres
Metric Unit Sequences
Fill in the missing conversions.
Mixed Metric Conversions
Convert and complete each bond.
Match: Measurement to Appropriate Tool
Match each measurement to the tool you would use.
Measurement in Sport
Explore how measurement is used in Australian sport.
How long is a cricket pitch? ___ Is that closer to 10 m or 20 m? ___
How long is an Olympic pool? ___ m. How many laps for 1 km? ___
Name another sport that uses metric measurement and explain how:
Sort: Which Instrument Measures It?
Sort each thing to be measured into the correct instrument.
Measurement Error Analysis
Investigate why measurement results can differ.
Two students measure the same desk. Student A gets 65 cm, Student B gets 63 cm. List 2 reasons why:
How would you reduce measurement errors?
Home Activity: Measurement Olympics
Hold a measurement Olympics at home!
- 1Set up 5 events: standing long jump (measure in cm), ball throw (metres), etc.
- 2Record everyone's results in a table.
- 3Find the winner of each event using measurement.
- 4Make a medal tally using tallies and display the results.
Perimeter Using Metric Units
Calculate the perimeter of each shape.
A square with sides 5 cm. Perimeter = ___
A rectangle 8 cm long and 3 cm wide. Perimeter = ___
A triangle with sides 4 cm, 5 cm, 6 cm. Perimeter = ___
Perimeter Bonds
Find the missing side length.
Measure and Calculate Perimeter
Measure a rectangular object and calculate its perimeter.
Object measured: ___ Length: ___ cm Width: ___ cm
Perimeter = length + length + width + width = ___ cm
Convert your perimeter to millimetres: ___ mm
Match Shape to Perimeter Formula
Match each shape to the correct perimeter formula.
Sort: Area or Perimeter?
Sort each measurement into the correct category.
Home Activity: Perimeter Hunt
Find and measure perimeters around your home!
- 1Measure the perimeter of your bedroom in centimetres. Convert to metres.
- 2Find the perimeter of the kitchen bench.
- 3Estimate then measure the perimeter of your garden or backyard.
- 4Draw a room on grid paper and calculate its perimeter using the scale.