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P2 Maths Cheat Sheet

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The short version

Every formula and rule a P2 child needs: 35 of them across 12 topics, on 7 A4 pages to print free. The PSLE tests the whole primary syllabus, so these formulas are in it too.

Every P2 maths formula, by topic

Numbers to 1000

Term 1Numbers to 1000 guide

Rule	Example
Hundreds, tens and ones472 is 4 hundreds, 7 tens and 2 ones. 10 tens make 1 hundred.	$400 + 70 + 2 =$ $472$ See it drawn
Numbers in wordsKeep the "and" after the hundreds. No tens? Say nothing for them.	See it drawn
Compare and orderCompare the hundreds, then the tens, then the ones: 753 is greater than 735.	See it drawn
Count on in hundredsFind the step, then keep adding it. Here it goes up by 100.	next → $350 + 100 =$ $450$ See it drawn
Odd and evenPair them up. Even leaves none over; odd leaves one: 9 is odd. Even numbers end in 0, 2, 4, 6 or 8.	See it drawn

Addition and Subtraction within 1000

Term 1Addition and Subtraction within 1000 guide

Rule	Example
Add in columnsAdd the ones first. 10 ones make 1 ten: regroup it into the tens.	$256 + 138 =$ $394$ See it drawn
Subtract in columnsSubtract the ones first. Not enough ones? Regroup 1 ten into 10 ones.	$542 - 217 =$ $325$ See it drawn
Add in your headAdding tens or hundreds? Only that place changes.	$365 + 30 =$ $395$ $365 + 200 =$ $565$ See it drawn

Multiplication and Division

Term 2Multiplication and Division guide

Rule	Example
Times tables of 2, 5 and 10Count in equal steps. 4 × 5 is the same as 5 × 4.	See it drawn
× and ÷ are a pairEvery ÷ fact has a × fact behind it. Check a division by multiplying back.	$3 \times 5 =$ $15$ $15 \div 5 =$ $3$ See it drawn
SharingYou know how many groups. Find how many in each.	$18 \div 2 =$ $9$ See it drawn
GroupingYou know how many in each group. Find how many groups.	$10 \div 5 =$ $2$ See it drawn

Multiplication Tables of 3 and 4

Term 3Multiplication Tables of 3 and 4 guide

Rule	Example
Times tables of 3 and 4Learn them by heart. 3 × 8 is the same as 8 × 3.	See it drawn
Double the 2s4 × 6 is double 2 × 6.	$4 \times 6 =$ $12 + 12 =$ $24$ See it drawn
Divide with the tables3 rows of 7 make 21. So 21 shared into 3 equal rows is 7 in each.	$21 \div 3 =$ $7$ See it drawn

Fractions

Term 3Fractions guide

Rule	Example
Equal parts of a wholeThe bottom number counts the equal parts. The top counts the shaded ones: 3 quarters.	See it drawn
Unit fractionsMore equal parts means smaller parts: one third is greater than one sixth.	See it drawn
Like fractionsSame bottom number? The greater top number is the greater fraction.	See it drawn
Add like fractionsAdd the top numbers. The bottom number stays the same.	$\frac{2}{6} + \frac{3}{6} =$ $\frac{5}{6}$ $\frac{5}{6} - \frac{1}{6} =$ $\frac{4}{6}$ See it drawn

Money

Term 4Money guide

Rule	Example
Count notes and coinsCount the notes first, then the coins.	$\text{\textdollar}5 + \text{\textdollar}2 =$ $\text{\textdollar}7$ $50 + 20 =$ $70\,\text{cents}$ $\text{\textdollar}7 + 70\,\text{cents} =$ $\text{\textdollar}7.70$ See it drawn
Dollars and centsDollars before the point, cents after, always 2 places. $1 is 100 cents.	$\text{\textdollar}3.45 =$ $345\,\text{cents}$ $80\,\text{cents} =$ $\text{\textdollar}0.80$ See it drawn
Compare amountsCompare the dollars first. Same dollars? Then compare the cents. 60 cents is more than 25 cents.	See it drawn

Length

Term 1Length guide

Rule	Example
Centimetres and metresShort things in cm, like a pencil. Long things in m, like this rope: 3 m. Start at 0.	See it drawn
Compare lengthsStart them on the same line. Then compare the numbers.	how much longer → $8\,\text{m} - 5\,\text{m} =$ $3\,\text{m}$ See it drawn

Mass

Term 2Mass guide

Rule	Example
Read a scaleFind what one small mark is worth first. The numbers go up in 2s, so each mark is 1 kg: 7 kg.	See it drawn
Heavier and lighterOn a balance, the heavier side goes down. The small ball is heavier than the big box A.	See it drawn

Time

Term 2Time guide

Rule	Example
Tell the time to the minuteHour hand first. Count the minute hand in fives, then in ones: 45, 46, 47.	See it drawn
Hours and minutes1 h is 60 min. Change the hours into minutes, then add.	$1\,\text{h}\ 15\,\text{min} =$ $60\,\text{min} + 15\,\text{min} =$ $75\,\text{min}$ $100\,\text{min} =$ $1\,\text{h}\ 40\,\text{min}$ See it drawn

Volume

Term 3Volume guide

Rule	Example
Measure in litresFind what one small mark is worth first. Here each mark is 1 ℓ.	See it drawn
Compare the litresRead each container's litres, then compare the numbers. B holds more.	how much more in B → $3\,\ell - 2\,\ell =$ $1\,\ell$ See it drawn

Shapes and Patterns

Term 4Shapes and Patterns guide

Rule	Example
Cube and cuboidAll flat faces, so they stack and slide. A cube's 6 faces are squares.	See it drawn
Cylinder and coneA curved surface rolls. A cylinder has 2 flat faces; a cone has 1.	See it drawn
SphereOne curved surface and no flat faces, like a ball. It rolls every way.	See it drawn
Repeating patternsFind the part that repeats, then say what comes next. A pattern can change by size, shape, colour or turn.	See it drawn

Picture Graphs

Term 4Picture Graphs guide

Rule	Example
Read the key firstOne picture can stand for more than 1. Multiply by the key.	Tuesday → $4 \times 5 =$ $20$ how many more on Tuesday than Monday → $20 - 10 =$ $10$ See it drawn

P2 maths revision notes, topic by topic

Numbers to 1000

Term 1

Place How many
Hundreds 4
Tens 7
Ones 2
Hundreds, tens and ones472 is 4 hundreds, 7 tens and 2 ones. 10 tens make 1 hundred. $400 + 70 + 2 =$ $472$
Numeral In words
615 six hundred and fifteen
208 two hundred and eight
Numbers in wordsKeep the "and" after the hundreds. No tens? Say nothing for them.
Hundreds Tens Ones
7 5 3
7 3 5
Compare and orderCompare the hundreds, then the tens, then the ones: 753 is greater than 735.
Point Value
150 150
250 250
350 350
? 450
Count on in hundredsFind the step, then keep adding it. Here it goes up by 100.next → $350 + 100 =$ $450$
Group Detail
9
Odd and evenPair them up. Even leaves none over; odd leaves one: 9 is odd. Even numbers end in 0, 2, 4, 6 or 8.

Place	How many
Hundreds	4
Tens	7
Ones	2

Numeral	In words
615	six hundred and fifteen
208	two hundred and eight

Hundreds	Tens	Ones
7	5	3
7	3	5

Point	Value
150	150
250	250
350	350
?	450

Group	Detail
	9

Addition and Subtraction within 1000

Term 1

Add in columnsAdd the ones first. 10 ones make 1 ten: regroup it into the tens. $256 + 138 =$ $394$
Subtract in columnsSubtract the ones first. Not enough ones? Regroup 1 ten into 10 ones. $542 - 217 =$ $325$
Point Value
365 365
375 375
385 385
395 395
Add in your headAdding tens or hundreds? Only that place changes. $365 + 30 =$ $395$ $365 + 200 =$ $565$

Point	Value
365	365
375	375
385	385
395	395

Multiplication and Division

Term 2

× 2 × 5 × 10
1 2 5 10
2 4 10 20
3 6 15 30
4 8 20 40
5 10 25 50
6 12 30 60
7 14 35 70
8 16 40 80
9 18 45 90
10 20 50 100
Times tables of 2, 5 and 10Count in equal steps. 4 × 5 is the same as 5 × 4.
Group Detail
15
× and ÷ are a pairEvery ÷ fact has a × fact behind it. Check a division by multiplying back. $3 \times 5 =$ $15$ $15 \div 5 =$ $3$
Group Detail
9
9
SharingYou know how many groups. Find how many in each. $18 \div 2 =$ $9$
Group Detail
5
5
GroupingYou know how many in each group. Find how many groups. $10 \div 5 =$ $2$

	× 2	× 5	× 10
1	2	5	10
2	4	10	20
3	6	15	30
4	8	20	40
5	10	25	50
6	12	30	60
7	14	35	70
8	16	40	80
9	18	45	90
10	20	50	100

Group	Detail
	15

Group	Detail
	9
	9

Group	Detail
	5
	5

Multiplication Tables of 3 and 4

Term 3

× 3 × 4
1 3 4
2 6 8
3 9 12
4 12 16
5 15 20
6 18 24
7 21 28
8 24 32
9 27 36
10 30 40
Times tables of 3 and 4Learn them by heart. 3 × 8 is the same as 8 × 3.
Group Detail
6 6×counter
6 6×counter
6 6×counter
6 6×counter
Double the 2s4 × 6 is double 2 × 6. $4 \times 6 =$ $12 + 12 =$ $24$
Group Detail
7 7×counter
7 7×counter
7 7×counter
Divide with the tables3 rows of 7 make 21. So 21 shared into 3 equal rows is 7 in each. $21 \div 3 =$ $7$

	× 3	× 4
1	3	4
2	6	8
3	9	12
4	12	16
5	15	20
6	18	24
7	21	28
8	24	32
9	27	36
10	30	40

Group	Detail
6	6×counter
6	6×counter
6	6×counter
6	6×counter

Group	Detail
7	7×counter
7	7×counter
7	7×counter

Fractions

Term 3

Equal parts of a wholeThe bottom number counts the equal parts. The top counts the shaded ones: 3 quarters.
Unit fractionsMore equal parts means smaller parts: one third is greater than one sixth.
Like fractionsSame bottom number? The greater top number is the greater fraction.
Add like fractionsAdd the top numbers. The bottom number stays the same. $\frac{2}{6} + \frac{3}{6} =$ $\frac{5}{6}$ $\frac{5}{6} - \frac{1}{6} =$ $\frac{4}{6}$

Money

Term 4

Group Detail
1×$5, 1×$2
1×50c, 1×20c
Count notes and coinsCount the notes first, then the coins. $\text{\textdollar}5 + \text{\textdollar}2 =$ $\text{\textdollar}7$ $50 + 20 =$ $70\,\text{cents}$ $\text{\textdollar}7 + 70\,\text{cents} =$ $\text{\textdollar}7.70$
In dollars In cents
$3.45 345¢
$0.80 80¢
Dollars and centsDollars before the point, cents after, always 2 places. $1 is 100 cents. $\text{\textdollar}3.45 =$ $345\,\text{cents}$ $80\,\text{cents} =$ $\text{\textdollar}0.80$
Dollars Cents
4 60
4 25
Compare amountsCompare the dollars first. Same dollars? Then compare the cents. 60 cents is more than 25 cents.

Group	Detail
	1×$5, 1×$2
	1×50c, 1×20c

In dollars	In cents
$3.45	345¢
$0.80	80¢

Dollars	Cents
4	60
4	25

Length

Term 1

Object Left (m) Right (m)
rope 0 3
Centimetres and metresShort things in cm, like a pencil. Long things in m, like this rope: 3 m. Start at 0.
Object Left (m) Right (m)
A 0 8
B 0 5
Compare lengthsStart them on the same line. Then compare the numbers.how much longer → $8\,\text{m} - 5\,\text{m} =$ $3\,\text{m}$

Object	Left (m)	Right (m)
rope	0	3

Object	Left (m)	Right (m)
A	0	8
B	0	5

Mass

Term 2

Figure Reading
box on a kitchen scale read the mass off the scale
Read a scaleFind what one small mark is worth first. The numbers go up in 2s, so each mark is 1 kg: 7 kg.
Group Detail
1×A
1×ball
Heavier and lighterOn a balance, the heavier side goes down. The small ball is heavier than the big box A.

Figure	Reading
box on a kitchen scale	read the mass off the scale

Group	Detail
	1×A
	1×ball

Time

Term 2

Clock Time
10.47 read from the hands
Tell the time to the minuteHour hand first. Count the minute hand in fives, then in ones: 45, 46, 47.
Point Value (min)
0 0
15 15
30 30
45 45
60 60
75 75
Hours and minutes1 h is 60 min. Change the hours into minutes, then add. $1\,\text{h}\ 15\,\text{min} =$ $60\,\text{min} + 15\,\text{min} =$ $75\,\text{min}$ $100\,\text{min} =$ $1\,\text{h}\ 40\,\text{min}$

Clock	Time
10.47	read from the hands

Point	Value (min)
0	0
15	15
30	30
45	45
60	60
75	75

Volume

Term 3

Reading ℓ
Level 3
Measure in litresFind what one small mark is worth first. Here each mark is 1 ℓ.
Reading ℓ
Level 2
Reading ℓ
Level 3
Compare the litresRead each container's litres, then compare the numbers. B holds more.how much more in B → $3\,\ell - 2\,\ell =$ $1\,\ell$

Reading	ℓ
Level	3

Reading	ℓ
Level	2

Reading	ℓ
Level	3

Shapes and Patterns

Term 4

Cube and cuboidAll flat faces, so they stack and slide. A cube's 6 faces are squares.
Cylinder and coneA curved surface rolls. A cylinder has 2 flat faces; a cone has 1.
SphereOne curved surface and no flat faces, like a ball. It rolls every way.
Group Detail
1×circle, 1×square, 1×triangle, 1×circle, 1×square, 1×triangle
Repeating patternsFind the part that repeats, then say what comes next. A pattern can change by size, shape, colour or turn.

Group	Detail
	1×circle, 1×square, 1×triangle, 1×circle, 1×square, 1×triangle

Picture Graphs

Term 4

Row books
Monday 10
Tuesday 20
Wednesday 15
Read the key firstOne picture can stand for more than 1. Multiply by the key.Tuesday → $4 \times 5 =$ $20$ how many more on Tuesday than Monday → $20 - 10 =$ $10$

Row	books
Monday	10
Tuesday	20
Wednesday	15

P3 Maths Cheat Sheet, page 1 of 8: formulas for numbers to 10 000

The P3 Maths Cheat Sheet

The P3 sheet holds 45 more formulas and rules, across its 10 topics, on 8 A4 pages.

P3 Maths Cheat Sheet

P1 Maths Cheat Sheet, page 1 of 8: formulas for numbers to 10; and addition and subtraction within 10

The P1 Maths Cheat Sheet

The P1 sheet holds 41 more formulas and rules, across its 13 topics, on 8 A4 pages.

P1 Maths Cheat Sheet

P4 Maths Cheat Sheet, page 1 of 7: formulas for numbers to 100 000; and factors and multiples

The P4 Maths Cheat Sheet

The P4 sheet holds 48 more formulas and rules, across its 12 topics, on 7 A4 pages.

P4 Maths Cheat Sheet

$P5 Maths Cheat Sheet, page 1 of 6: formulas for whole numbers and four operations; and fractions and division$

The P5 Maths Cheat Sheet

The P5 sheet holds 48 more formulas and rules, across its 12 topics, on 6 A4 pages.

P5 Maths Cheat Sheet

$P6 Maths Cheat Sheet, page 1 of 4: formulas for fractions, ratio and percentage$

The P6 Maths Cheat Sheet

The P6 sheet holds 36 more formulas and rules, across its 8 topics, on 4 A4 pages.

P6 Maths Cheat Sheet

The sheet

All 7 pages, full size

The PDF prints sharp on A4. Each page is also an image you can save or send.

P2 Maths Cheat Sheet, page 1 of 7: formulas for numbers to 1000
P2 Maths Cheat Sheet, page 2 of 7: formulas for addition and subtraction within 1000; and multiplication and division
P2 Maths Cheat Sheet, page 3 of 7: formulas for multiplication tables of 3 and 4
$P2 Maths Cheat Sheet, page 4 of 7: formulas for fractions and money$
P2 Maths Cheat Sheet, page 4 of 7: formulas for fractions and money
P2 Maths Cheat Sheet, page 5 of 7: formulas for length, mass and time
P2 Maths Cheat Sheet, page 6 of 7: formulas for volume; and shapes and patterns
P2 Maths Cheat Sheet, page 7 of 7: formulas for picture graphs, problem-sum methods, exam rules and units

Download the free PDF7 A4 pages · PDF, 1371 KB

Knowing the formula is half of it

The other half is spotting which one a question needs. StudyLah gives your child P2 questions on these topics, and Lah walks through each one step by step. Free: one Daily Practice and one Topic Drill every day, and one exam paper a month.

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Questions

Questions parents ask

What maths formulas does a P2 child need to know?

The 35 formulas and rules on this sheet, across numbers to 1000; addition and subtraction within 1000; length; multiplication and division; mass; time; multiplication tables of 3 and 4; fractions; volume; money; picture graphs; and shapes and patterns. It also shows how to spot 2 problem-sum methods.

P3 Maths Cheat Sheet

What topics are in P2 maths?

12 topics, in the order schools teach them: numbers to 1000; addition and subtraction within 1000; length; multiplication and division; mass; time; multiplication tables of 3 and 4; fractions; volume; money; picture graphs; and shapes and patterns.

Primary 2 maths syllabus

Keep going

Sources: Ministry of Education, Singapore, Primary Mathematics Syllabus (Standard), updated October 2025.

Updated 23 October 2026

Practise every topic on the P2 sheet

Free for every P2 child. Lah walks through each question.

Try it free

	× 2	× 5	× 10
1	2	5	10
2	4	10	20
3	6	15	30
4	8	20	40
5	10	25	50
6	12	30	60
7	14	35	70
8	16	40	80
9	18	45	90
10	20	50	100

	× 2	× 5	× 10
1	2	5	10
2	4	10	20
3	6	15	30
4	8	20	40
5	10	25	50
6	12	30	60
7	14	35	70
8	16	40	80
9	18	45	90
10	20	50	100

	× 2	× 5	× 10
1	2	5	10
2	4	10	20
3	6	15	30
4	8	20	40
5	10	25	50
6	12	30	60
7	14	35	70
8	16	40	80
9	18	45	90
10	20	50	100