Math · Unit 6

Measurement, Time and Money

Length, weight, capacity, time, money and units

The unit where mathematics touches daily life most directly, and where the arithmetic is easy but the units are not.

It covers length, weight and capacity, telling the time, handling money, and converting between units - which is the skill that carries furthest, into science and into anything involving scale.

This unit breaks down into 21 short steps and 120 questions, starting at difficulty 2 and building to 3. Below you can see exactly what it covers, how the path is structured, and worked examples with explanations.

Steps: 21
Questions: 120
Difficulty: 2-3

What this unit covers

Length and Distance
Weight and Capacity
Telling Time
Units and Converting
Money

Where this fits

Draws on Adding and Subtracting and on decimals. Nothing depends on it in turn.

Where people slip

Time is the one system that is not decimal. Sixty seconds, sixty minutes, twenty-four hours - and applying decimal habits to it produces wrong answers that look right.

How the unit is structured

Measurement, Time and Money runs as 21 short steps that unlock in order. 15 are practice rounds and 6 are challenge rounds that pull together everything before them. Questions start at difficulty 2 and climb to 3 as you progress.

Step 1 · easierStep 21 · harder

Challenge rounds

Example questions

30 real questions from this unit, with the answer and the reason behind it, grouped by what they practise. There are 120 in the unit altogether.

Length and Distance

Build the sentenceLevel 2
1. Build the true sentence about length.
Answer: One meter equals one hundred centimeters
One meter equals one hundred centimeters.
Choose all that applyLevel 3
2. Which of these are longer than 1 meter? (choose all)
- 150 cmcorrect
- 1 kilometercorrect
- 2 meterscorrect
- 90 cm
150 cm is 1.5 m, 1 kilometer and 2 meters are all longer than 1 meter, but 90 cm is shorter.
Fact or fibLevel 3
3. A door is about 2 meters tall.
Answer: True
Most doors are around 2 meters tall, so this is a good estimate.
Fill the blankLevel 3
4. 2 kilometers = ____ meters.
- 2000correct
- 200
- 20
- 2
Each kilometer is 1000 meters, so 2 x 1000 = 2000 m.
Guess the numberLevel 3
5. A path is made of 8 steps, each 50 cm long. How many centimeters is the path in total?
Answer: 400 cm
Multiply: 8 x 50 = 400 cm.
Match the pairsLevel 3
6. Match each length to its equal value.
Answer: 1 centimeter = 10 millimeters; 1 meter = 100 centimeters; 1 kilometer = 1000 meters
Each step up in length units multiplies by 10, 100 or 1000.

Money

Build the sentenceLevel 2
7. Build the true sentence about money.
Answer: Fifty cents is half a dollar
Fifty cents is half a dollar.
Multiple choiceLevel 2
8. You pay for a 60 cent sticker with a 1 dollar coin. How much change do you get?
- 40 centscorrect
- 50 cents
- 60 cents
- 30 cents
One dollar is 100 cents, and 100 - 60 = 40 cents change.
Choose all that applyLevel 3
9. Which of these add up to exactly 1 dollar? (choose all)
- 100 centscorrect
- two 50 cent coinscorrect
- four 25 cent coinscorrect
- three 25 cent coins
100 cents, two 50 cent coins and four 25 cent coins each make 1 dollar, but three 25 cent coins make only 75 cents.
Fill the blankLevel 3
10. Four 25 cent coins make ____ dollar.
- 1correct
- 2
- 4
- 5
Multiply: 4 x 25 = 100 cents, which is 1 dollar.
Guess the numberLevel 3
11. You buy 3 apples that cost 40 cents each. How many cents do you spend in total?
Answer: 120 cents
Multiply: 3 x 40 = 120 cents.
Match the pairsLevel 3
12. Match each group of coins to its total value.
Answer: Two 25 cent coins = 50 cents; Ten 10 cent coins = 1 dollar; Four 5 cent coins = 20 cents
Multiply the number of coins by each coin's value.

Telling Time

Fact or fibLevel 2
13. Quarter past 4 means the time is 4:15.
Answer: True
A quarter of an hour is 15 minutes, so quarter past 4 is 4:15.
Fill the blankLevel 2
14. 1 day = ____ hours.
- 24correct
- 12
- 60
- 48
One full day is 24 hours long.
Match the pairsLevel 2
15. Match each clock time to how we say it.
Answer: 3:00 = 3 o'clock; 3:15 = Quarter past 3; 3:30 = Half past 3
15 minutes is a quarter and 30 minutes is a half of an hour.
Build the sentenceLevel 3
16. Build the true sentence about time.
Answer: One minute has sixty seconds
One minute has sixty seconds.
Choose all that applyLevel 3
17. Which of these are the same as 90 minutes? (choose all)
- 1 hour 30 minutescorrect
- one and a half hourscorrect
- half of 3 hourscorrect
- 1 hour 45 minutes
1 hour 30 minutes, one and a half hours and half of 3 hours all equal 90 minutes, but 1 hour 45 minutes is 105 minutes.
Multiple choiceLevel 3
18. A movie starts at 2:15 and lasts 1 hour 30 minutes. When does it end?
- 3:45correct
- 3:30
- 4:15
- 3:15
Add 1 hour 30 minutes to 2:15 to get 3:45.

Units and Converting

Fill the blankLevel 2
19. We measure the weight of an apple in ____.
- gramscorrect
- litres
- meters
- minutes
A small object like an apple is weighed in grams.
Match the pairsLevel 2
20. Match each measurement to its equal value.
Answer: 1 meter = 100 centimeters; 1 kilogram = 1000 grams; 1 hour = 60 minutes
Each conversion uses a base of 100 or 60.
Multiple choiceLevel 2
21. How many centimeters are in 5 meters?
- 500correct
- 50
- 5000
- 55
Each meter is 100 cm, so 5 x 100 = 500 cm.
Build the sentenceLevel 3
22. Build the true sentence about distance.
Answer: One kilometer equals one thousand meters
One kilometer equals one thousand meters.
Choose all that applyLevel 3
23. Which of these equal 1 kilometer? (choose all)
- 1000 meterscorrect
- 100000 centimeterscorrect
- half of 2 kilometerscorrect
- 500 meters
1000 meters, 100000 centimeters and half of 2 kilometers all equal 1 kilometer, but 500 meters is only half a kilometer.
Fact or fibLevel 3
24. 1500 grams is the same as 1.5 kilograms.
Answer: True
One kilogram is 1000 grams, so 1500 g is 1.5 kg.

Weight and Capacity

Build the sentenceLevel 2
25. Build the true sentence about weight.
Answer: One kilogram equals one thousand grams
One kilogram equals one thousand grams.
Choose all that applyLevel 2
26. Which of these are best measured in grams? (choose all)
- a feathercorrect
- an applecorrect
- a coincorrect
- the distance to school
A feather, an apple and a coin are all light enough for grams, but the distance to school is a length.
Fact or fibLevel 2
27. A small paperclip weighs about 1 gram.
Answer: True
A paperclip is very light, so about 1 gram is a good estimate.
Fill the blankLevel 2
28. 1 kilogram = ____ grams.
- 1000correct
- 100
- 10
- 500
One kilogram always equals 1000 grams.
Multiple choiceLevel 2
29. How many grams are in 1 kilogram?
- 1000correct
- 100
- 10
- 500
A kilogram is made of 1000 grams, so 1 kg = 1000 g.
Match the pairsLevel 3
30. Match each measurement to its equal value.
Answer: 1 kilogram = 1000 grams; 1 litre = 1000 millilitres; Half a kilogram = 500 grams
A kilogram and a litre each break into 1000 smaller units.

Where these questions come from. Each unit starts as a plan of the concepts it should cover and the difficulty it should span. Questions are written against that plan with AI assistance, then checked by a validator that rejects anything without a single defensible answer, an explanation, or plausible wrong options. How we write questions sets out the whole process, and corrections are fixed in the bank and reach the site and the app the same day.

How you practise

This unit mixes 14 different question formats, so you are recalling and applying rather than recognising the same layout every time.

Build the sentence
Choose all that apply
Fact or fib
Fill the blank
Guess the number
Match the pairs
Multiple choice
Odd one out
Picture question
Put in order
Sort into groups
Spell it
True or false
Type the answer

Practise Measurement, Time and Money

120 questions across 21 steps. Start with step one and crawl at your own pace.

Play this unit

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