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Primary 1 Mathematics Practice Paper 4

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Primary 1 Mathematics AI Generated Generated by Kimi K2.6 Free Updated 2026-06-09

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TuitionGoWhere Practice Paper - Mathematics Primary 1

TuitionGoWhere Practice Paper (AI)

Subject: Mathematics
Level: Primary 1
Paper: Practice Paper
Version: 4 of 5
Duration: 35 minutes
Total Marks: 40

Name: _________________________ Class: _______ Date: ___________

Instructions

Answer all questions.
Write your answers in the spaces provided.
Show your working where asked.
Calculators are not allowed.

Section A: Counting and Number Recognition (Questions 1–8)

16 marks

1. Count the stars below. Write the number in numerals and in words.

<image_placeholder> id: Q1-fig1 type: diagram linked_question: Q1 description: A scattered arrangement of 17 star shapes on a white background labels: None (student must count) values: 17 stars total, not arranged in any regular pattern must_show: Stars clearly separated and distinguishable; no rows or obvious grouping that makes counting trivial </image_placeholder>

Answer: __________________ (numerals)
Answer: ______________________ (words)
(2 marks)

2. How many more apples are needed to make 20 apples?

<image_placeholder> id: Q2-fig1 type: diagram linked_question: Q2 description: A picture of apples in a basket labels: None values: 14 apples shown, student needs to find difference to 20 must_show: 14 distinct apples in a basket or group; clearly countable without ambiguity </image_placeholder>

I need ________ more apples.

(2 marks)

3. Look at the number pattern. What comes next?

7, 14, 21, 28, ______

This pattern counts in ________.

(2 marks)

4. Write these numbers in order from smallest to biggest.

45, 17, 89, 32, 50

________, ________, ________, ________, ________

(2 marks)

5. What is the value of the digit 6 in 64?

The value of 6 is ________.

(2 marks)

6. Circle the biggest number and underline the smallest number.

72 27 70 7

(2 marks)

7. Write the number that is 10 more than 56.

(1 mark)

8. Fill in the missing numbers.

(a) 34 = ________ tens ________ ones
(b) ________ = 5 tens 8 ones

(2 marks)

Section B: Addition and Subtraction Within 100 (Questions 9–16)

16 marks

9. Show your working: 28 + 15 = ________

(2 marks)

10. Show your working: 73 − 29 = ________

(2 marks)

11. Mei Ling has 42 stickers. She gives away 18 stickers. How many stickers does she have left?

She has ________ stickers left.

(2 marks)

12. There are 23 boys and 19 girls in a class. How many children are there altogether?

There are ________ children altogether.

(2 marks)

13. Fill in the blank: 45 + ________ = 72

(2 marks)

14. A ribbon is 85 cm long. I cut off 37 cm. How long is the ribbon now?

The ribbon is now ________ cm long.

(2 marks)

15. James has 5 packets of sweets. Each packet has 8 sweets. How many sweets does James have altogether? Draw circles to show your working.

<image_placeholder> id: Q15-fig1 type: diagram linked_question: Q15 description: 5 blank rectangular boxes labelled as packets, each containing space for 8 circles to be drawn by student labels: Packet 1, Packet 2, Packet 3, Packet 4, Packet 5 values: 5 packets, 8 sweets per packet must_show: 5 clearly separated packet outlines; space inside each for drawing 8 items; labels visible </image_placeholder>

James has ________ sweets altogether.

(2 marks)

16. Mother bakes 30 cupcakes. She puts them equally into 6 boxes. How many cupcakes are in each box?

________ cupcakes are in each box.

(2 marks)

Section C: Applying Your Knowledge (Questions 17–20)

8 marks

17. Ah Boon has these coins in his wallet.

<image_placeholder> id: Q17-fig1 type: diagram linked_question: Q17 description: Collection of Singapore coins arranged in groups labels: Coin denominations visible (50-cent, 20-cent, 10-cent, 5-cent, 1-cent where applicable) values: Two 50-cent coins, three 20-cent coins, one 10-cent coin must_show: Actual coin shapes with " $0.50" or "50¢" visible, "$ 0.20" or "20¢" visible, "$0.10" or "10¢" visible; coin counts clearly distinguishable </image_placeholder>

(a) How much money does Ah Boon have altogether? $________ **(b)** He wants to buy a book that costs$ 1. Does he have enough money? Circle your answer. Yes / No

(2 marks)

18. Look at the picture graph showing favourite fruits of Primary 1 pupils.

<image_placeholder> id: Q18-fig1 type: chart linked_question: Q18 description: Simple picture graph (pictogram) showing favourite fruits labels: Apple, Banana, Orange, Mango (x-axis); One picture icon = 2 pupils (must be stated on graph) values: Apple: 4 icons, Banana: 3 icons, Orange: 5 icons, Mango: 2 icons must_show: Clear fruit labels; consistent icon size; key stating "Each 🍎 = 2 pupils" or similar; axes labelled; icons arranged in neat rows </image_placeholder>

(a) How many pupils chose orange? ________ pupils
(b) What is the most popular fruit? ________
(c) How many more pupils chose orange than mango? ________ pupils

(4 marks)

19. The clock shows the time Tom eats his dinner.

<image_placeholder> id: Q19-fig1 type: diagram linked_question: Q19 description: Analog clock face showing time labels: Hour hand, minute hand values: Hour hand just past 6, minute hand pointing at 8 (40 minutes) must_show: Standard analog clock with numbers 1-12; clear distinction between hour and minute hands; no digital display </image_placeholder>

Tom eats dinner at ________ : ________
(Write the time in numbers)

(1 mark)

20. Measure the pencil below using the ruler shown.

<image_placeholder> id: Q20-fig1 type: diagram linked_question: Q20 description: A pencil placed next to a centimetre ruler labels: 0 cm mark, numbered cm marks up to at least 15 cm values: Pencil starts at 0 cm, ends at 12 cm; ruler markings every 1 cm with numbers 0,1,2,...15 must_show: Pencil aligned with 0; ruler clearly marked in cm; object endpoints clearly visible against ruler markings </image_placeholder>

The pencil is ________ cm long.

(1 mark)

END OF PAPER

Please check your answers before handing in.

Answers

TuitionGoWhere Practice Paper - Mathematics Primary 1

Answer Key and Marking Scheme

Version: 4 of 5
Total Marks: 40

Section A: Counting and Number Recognition (Questions 1–8)

Question 1 (2 marks)

Answer: 17 (numerals); seventeen (words)

Working/Method:

Count the stars one by one, or group them to count more easily
17 is a two-digit number: 1 ten and 7 ones
In words: e-lev-en-teen → seventeen (join "seven" and "teen")

Marking notes:

1 mark for correct numeral 17
1 mark for correct word seventeen (accept minor spelling errors if phonetically reasonable, e.g., "seventen" — use professional judgment)

Common mistake: Writing "70" by reversing digits, or writing "seven teen" as two words.

Question 2 (2 marks)

Answer: 6 more apples

Working/Method:

Step 1: Count the apples shown = 14 apples
Step 2: The target is 20 apples
Step 3: Find the difference: 20 − 14 = 6
"How many more" means we need to subtract to find what's missing

Marking notes:

2 marks for correct answer 6 (or "6 more apples")
1 mark if method shown correctly but arithmetic error made

Common mistake: Adding 14 + 20 = 34 instead of subtracting; misreading the question as "how many altogether."

Question 3 (2 marks)

Answer: 35; sevens (or "7s")

Working/Method:

Pattern: 7, 14, 21, 28, ...
Differences: 14 − 7 = 7, 21 − 14 = 7, 28 − 21 = 7
This is the 7 times table: counting in sevens
Next number: 28 + 7 = 35

Marking notes:

1 mark for correct next number 35
1 mark for identifying pattern as "sevens" or "7s" or "counting in 7s"

Common mistake: Saying "adding 7" instead of "counting in sevens"; answer of 30 (adding 2 to each digit).

Question 4 (2 marks)

Answer: 17, 32, 45, 50, 89

Working/Method:

Compare tens first: 17 (1 ten), 32 (3 tens), 45 (4 tens), 50 (5 tens), 89 (8 tens)
Since all have different tens digits, order by tens: 1 < 3 < 4 < 5 < 8
Order: 17, 32, 45, 50, 89

Marking notes:

2 marks for fully correct sequence
1 mark if four numbers in correct order (one number misplaced)
0 marks if fewer than four correct

Common mistake: Looking at units digit first (e.g., thinking 89 is smallest because 9 is small); writing 50 before 45 because 5 = 5.

Question 5 (2 marks)

Answer: 60 (or 6 tens)

Working/Method:

In 64, the digits are 6 and 4
6 is in the tens place
Value of 6 in tens place = 6 × 10 = 60
The digit is 6; the value is 60

Marking notes:

2 marks for 60 or 6 tens
1 mark for answer "6" (confusing digit with value — common early error, note for teaching)
0 marks for "4" or "40"

Key concept: Distinguishing digit (the symbol) from value (what it represents due to position).

Question 6 (2 marks)

Answer: Biggest: 72 (circled); Smallest: 7 (underlined)

Working/Method:

Compare all numbers: 72, 27, 70, 7
72: 7 tens 2 ones
27: 2 tens 7 ones
70: 7 tens 0 ones
7: 0 tens 7 ones (or 7 ones)
Biggest: 72 (more ones than 70)
Smallest: 7 (no tens at all)

Marking notes:

1 mark for correctly circling 72
1 mark for correctly underlining 7
If student marks are unclear but reasoning evident, accept

Common mistake: Circling 70 as biggest (same tens digit, not checking ones); confusing 7 and 27.

Question 7 (1 mark)

Answer: 66

Working/Method:

"10 more than" means add 10
56 + 10 = 66
When adding 10, the tens digit increases by 1, ones stay the same

Marking notes:

1 mark for 66

Common mistake: 57 (adding 1 instead of 10); 156 (not understanding place value limits).

Question 8 (2 marks)

Answer:
(a) 3 tens 4 ones
(b) 58

Working/Method: (a) 34 = 30 + 4, so 3 tens and 4 ones (b) 5 tens = 50, 8 ones = 8, so 50 + 8 = 58

Marking notes:

1 mark for each part correct
For (a): both digits must be correct ("3" and "4")
For (b): must write full number 58, not "5 tens 8 ones"

Key concept: Place value — position of digit determines its value.

Section B: Addition and Subtraction Within 100 (Questions 9–16)

Question 9 (2 marks)

Answer: 43

Working/Method:

  28
+ 15
----
  43

Step 1: Add ones: 8 + 5 = 13 ones = 1 ten and 3 ones
- Write 3 in ones place, carry 1 ten to tens column
Step 2: Add tens: 2 + 1 + 1 (carried) = 4 tens

Full working should show:

8 + 5 = 13, regroup 10 ones as 1 ten
2 tens + 1 ten + 1 ten = 4 tens

Marking notes:

2 marks for correct answer with working shown
1 mark for correct method but arithmetic error (e.g., answer 33 from missing carry)

Common mistake: 313 (writing 13 without regrouping); 33 (forgetting to add carried ten).

Question 10 (2 marks)

Answer: 44

Working/Method:

  73
- 29
----
  44

Step 1: Ones column: 3 − 9 (can't do, need to borrow/regroup)
- Take 1 ten from 7 tens → 6 tens left
- 3 ones becomes 13 ones
- 13 − 9 = 4 ones
Step 2: Tens column: 6 − 2 = 4 tens

Marking notes:

2 marks for correct answer with working shown
1 mark for correct method but subtraction error

Common mistake: 54 (forgetting to reduce tens after borrowing); 44 but no working shown — award 1 mark if answer only.

Question 11 (2 marks)

Answer: 24 stickers

Working/Method:

"Gives away" means subtraction (taking away)
42 − 18 = ?

  42
- 18
----
  24

Borrow: 2 → 12 ones, 12 − 8 = 4
3 − 1 = 2 tens

Marking notes:

2 marks for correct answer with working or clear reasoning
1 mark for correct method, calculation error

Common mistake: 42 + 18 = 60 (not reading "gives away" as subtraction).

Question 12 (2 marks)

Answer: 42 children

Working/Method:

"Altogether" means addition
23 + 19 = ?

  23
+ 19
----
  42

3 + 9 = 12, write 2, carry 1
2 + 1 + 1 = 4 tens

Marking notes:

2 marks for correct answer with working
1 mark for correct identification of operation but calculation error

Question 13 (2 marks)

Answer: 27

Working/Method:

"What plus 45 makes 72?" → 72 − 45 = ?
Check: 45 + 27 = 72 ✓

Alternative:

  45 + ? = 72
  ? = 72 - 45 = 27

2 − 5 can't do, borrow: 12 − 5 = 7, 6 − 4 = 2

Marking notes:

2 marks for 27
1 mark for method shown correctly

Question 14 (2 marks)

Answer: 48 cm

Working/Method:

"Cut off" means subtraction (taking away)
85 − 37 = ?

  85
- 37
----
  48

5 − 7 can't do, borrow: 15 − 7 = 8
7 − 3 = 4

Marking notes:

2 marks for 48 (with or without unit, but encourage "cm")
1 mark for working shown correctly

Common mistake: 85 + 37 = 122; forgetting "cut off" indicates subtraction.

Question 15 (2 marks)

Answer: 40 sweets

Working/Method:

Method 1 (repeated addition): 8 + 8 + 8 + 8 + 8 = 40
Method 2 (multiplication concept): 5 groups of 8 = 5 × 8 = 40

Student drawing should show:

5 packets with 8 circles/sweets in each
Total counted: 8, 16, 24, 32, 40

Marking notes:

2 marks for correct answer with drawing or working shown
1 mark for correct method (drawing 5 groups of 8) but counting error

Key concept: Multiplication as repeated addition or equal groups.

Question 16 (2 marks)

Answer: 5 cupcakes

Working/Method:

"Equally into 6 boxes" → sharing/division
30 ÷ 6 = ?
Think: 6 × ? = 30
6 × 5 = 30, so 30 ÷ 6 = 5

Or repeatedly subtract: 30 − 6 − 6 − 6 − 6 − 6 = 0 (5 sixes)

Marking notes:

2 marks for 5 (accept "5 cupcakes")
1 mark for method shown (repeated subtraction or multiplication fact)

Common mistake: 30 + 6 = 36 or 30 − 6 = 24 (not understanding "equally").

Section C: Applying Your Knowledge (Questions 17–20)

Question 17 (2 marks)

Answer:
(a) $1.60 (or 160¢)
(b) Yes (circled)

Working/Method: (a)

Two 50¢ coins: 50¢ + 50¢ = 100¢ = $1.00
Three 20¢ coins: 20¢ + 20¢ + 20¢ = 60¢
One 10¢ coin: 10¢
Total: $1.00 +$ 0.60 + $0.10 = **$ 1.60** (or 160 cents)

(b) $1.60 >$ 1.00, so Yes, he has enough.

Marking notes:

1 mark for (a): $1.60 or 160¢
1 mark for (b): circling Yes
For (a): accept $1.6 but prefer$ 1.60 for money notation

Common mistake: Counting coins instead of values (saying "6 coins"); misreading 20¢ as 50¢.

Question 18 (4 marks)

Answer:
(a) 10 pupils
(b) Orange
(c) 6 pupils

Working/Method:

Key: Each icon = 2 pupils

(a) Orange: 5 icons × 2 = 10 pupils

(b) Apple: 4 × 2 = 8 pupils
Banana: 3 × 2 = 6 pupils
Orange: 10 pupils
Mango: 2 × 2 = 4 pupils
Orange has the highest number (10 pupils)

(c) Orange − Mango = 10 − 4 = 6 pupils Or: (5 − 2) × 2 = 3 × 2 = 6

Marking notes:

1 mark for (a): 10
1 mark for (b): Orange
2 marks for (c): 6 (1 mark for method: finding difference in icons or pupils; 1 mark for correct answer)

Common mistake: Ignoring the key and counting icons directly (answering 5 for orange instead of 10).

Question 19 (1 mark)

Answer: 6 : 40 (or 6.40)

Working/Method:

Minute hand at 8: 8 × 5 = 40 minutes
Hour hand just past 6: 6 o'clock
Time: 6:40

Marking notes:

1 mark for correct time notation
Accept "6.40" or "6:40" or "6 40"
Reject "8:30" or other incorrect readings

Common mistake: Thinking minute hand at 8 means "8 minutes"; reading hour hand as pointing to next hour.

Question 20 (1 mark)

Answer: 12 cm

Working/Method:

Pencil starts at 0 cm mark
Pencil ends at 12 cm mark
Length = end position − start position = 12 − 0 = 12 cm

Marking notes:

1 mark for 12 (or "12 cm")
Accept reasonable visual estimation if image rendering slightly off; answer should be based on stated values in placeholder

Common mistake: Reading end of pencil at 11 or 13 (not aligning carefully); saying "12" without unit.

Summary Marking Table

Question	Marks	Topic Skill
1	2	Counting, numerals and words
2	2	"How many more" subtraction
3	2	Number patterns, skip counting
4	2	Ordering numbers
5	2	Place value (value of digit)
6	2	Comparing numbers
7	1	Adding 10 (place value)
8	2	Place value decomposition
9	2	Addition with regrouping
10	2	Subtraction with regrouping
11	2	Subtraction word problem
12	2	Addition word problem
13	2	Inverse (missing addend)
14	2	Subtraction word problem
15	2	Multiplication as equal groups
16	2	Division as equal sharing
17	2	Money calculation, comparison
18	4	Picture graph interpretation
19	1	Telling time
20	1	Measuring length
Total	40

END OF ANSWER KEY