Primary 2 Mathematics
P2 Maths: 3-digit numbers, addition/subtraction, multiplication, division.
The order below is the recommended shallow-to-deep path.
Units 單元
Tap a unit name to jump to its topics.
數與代數 Numbers & Algebra6/6 live
- 1Three-digit NumbersBasic✓
- 23-digit Addition and SubtractionBasic✓
- 3Multiplication tables of 2, 5, 10Foundation✓
- 4Division (I): Equal sharingFoundation✓
- 5Division (II): RemainderFoundation✓
- 6Patterns (II): ABAB & AABBFoundation✓
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q1In 123, 1 is what place?
Q2123 + 456 = ?
Q33 × 2 = ?
Q410 ÷ 2 = ?
Q57 ÷ 3 = ?
圖形與空間 Shape & Space3/3 live
- 73D Shapes (II): Prisms & CylindersFoundation✓
- 8Angles (I): Right anglesFoundation✓
- 9Quadrilaterals (I): Rectangle & SquareFoundation✓
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q1How many faces does a triangular prism have?
Q2How many degrees is a right angle?
Q3How many right angles has a rectangle?
Q4A can is what solid?
Q5How many vertices does an angle have?
度量 Measures6/6 live
- 10Length (1): Comparing LengthBasic✓
- 11Length (2): CentimetreBasic✓
- 12Length (III): MetreFoundation✓
- 13Time (II): Half pastFoundation✓
- 14Time (III): MinutesFoundation✓
- 15HK Money (II): $10–$100Foundation✓
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q1Pencil and eraser which is longer?
Q2What unit for short objects?
Q3How many cm in 1 m?
Q4Minute hand at 6 is how many minutes?
Q5Minute hand at 5 is how many minutes?
數據處理 Data Handling1/1 live
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q11 symbol = 5 people; 3 symbols?
Q2Where is the key shown?
Q31 sun = 4 hours; 2 and a half suns?
Q4What represents amounts?
Q55 symbols, 1 = 10. Total?
Vocabulary book 生字簿
All terms, bilingual (printable).
Third digit, e.g. 1 in 123 is hundreds place.
Second digit, e.g. 2 in 123 is tens place.
First digit, e.g. 3 in 123 is units place.
0-9 ten symbols.
How much each place represents.
Symbol for counting.
Say the number out loud.
Write the number down.
Put two numbers together, e.g. 123 + 456 = 579.
Take away from a number, e.g. 579 - 123 = 456.
Units add to more than 10, carry 1 to tens.
Units not enough to subtract, borrow 1 from tens as 10.
Units align with units, tens with tens, hundreds with hundreds.
Write in rows aligned to calculate.
Answer of addition.
Answer of subtraction.
Repeated addition, e.g. 3 × 2 = 2 + 2 + 2.
The symbol ×.
The answer to a multiplication.
Groups with the same amount.
2, 4, 6, 8, 10...
5, 10, 15, 20, 25...
10, 20, 30, 40...
Times 2, e.g. double 6 is 12.
Share equally.
The symbol ÷.
Each share is the same.
How much per share.
One part after sharing.
The answer to a division.
Making equal groups.
Quotient x divisor = the total.
What is left over after sharing.
Share equally.
The number you divide by.
How many each share.
Too few to share again.
Every share the same.
Quotient x divisor + remainder = total.
Deal out one by one.
A repeating arrangement.
Two things taking turns: red blue red blue.
Pairs: red red blue blue.
The group that keeps cycling.
Keep the pattern going.
E.g. 2, 4, 6, 8 (add 2 each time).
10, 20, 30, 40.
The missing item inside a pattern.
Two equal polygon bases with rectangular sides.
A prism with triangle bases.
A prism with 4-sided bases.
Two circular bases and a curved side.
The top and bottom faces.
A bending face, not flat.
Polygon base with triangle sides, like the pyramids.
A flat surface of a solid.
Two arms opening from one vertex.
The point where two arms meet.
The two lines making the angle.
A 90-degree angle, like a book corner.
The unit for angles, symbol °.
A tool with a right angle.
The corner of an object.
See which angle opens wider.
A shape with 4 sides.
Opposite sides equal, 4 right angles.
All 4 sides equal, 4 right angles.
Sides facing each other.
A 90-degree angle.
A straight edge.
Same length.
A flat form with an outline.
Object is long.
Object is short.
Vertical direction is tall.
See which is longer or shorter.
More long than another.
More short than another.
Put two things together to compare.
Dining table or desk.
Unit for shorter objects, symbol cm.
Tool for measuring length.
Use ruler to measure length.
Small clip to hold paper.
Thing to erase pencil writing.
Pen for writing.
One mark on ruler.
Guess length roughly without ruler.
Unit for longer objects, symbol m.
Unit for shorter objects, symbol cm.
A tape for longer measures.
Change between m and cm.
Guess the length roughly.
How tall something is.
About 2 metres tall.
1 m is much longer than 1 cm.
30 minutes past; minute hand at 6.
The long hand; shows minutes.
The short hand; shows the hour.
30 minutes.
The hour hand stands between two numbers.
Minute hand at 12.
Digital way to write half past 4.
Tell the time from the clock.
A time unit; 60 minutes = 1 hour.
The hand that shows minutes.
Each number on the clock is 5 minutes apart.
15 minutes; minute hand at 3.
30 minutes; minute hand at 6.
5, 10, 15, 20...
Minute hand at n means n × 5 minutes.
Time written like 4:20.
Paper money: $10, $20, $50, $100.
The biggest common note.
Two $50 notes = $100.
Money returned after paying too much.
How much an item costs.
The sum to pay for several items.
Hand over the money.
The value printed on a note.
The picture used in the chart.
Says what one symbol stands for.
To mean a certain amount.
Pictures x key value.
Half the key value.
The item with the biggest count.
Which row has more or fewer.
The real count.