Mathematics questions, unit 2

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Addition, Subtraction, Multiplication and Division

40 marks. Use Practice to check each answer as you go, or Exam to answer everything against the clock first. Show your working for Section B.

Section A: objective questions

8 marks

Choose the correct answer.

Question 1

4 528 + 1 367 = ______

5 885
5 895
3 161
5 995

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Ones: 8 + 7 = 15, write 5 and carry 1. Tens: 2 + 6 + 1 = 9. Hundreds: 5 + 3 = 8. Thousands: 4 + 1 = 5. Answer 5 895. 5 885 forgets the carried ten; 3 161 is a subtraction.

For the teacher: Applying, low difficulty, standard 2.1.1

Textbook p. 34

Question 2

Diagram 1 shows three number cards. What is the sum of the three numbers?

Number cards 1 206, 345 and 2 078 — Diagram 1

6 734
3 619
3 529
3 629

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1 206 + 345 + 2 078: ones 6 + 5 + 8 = 19 (write 9, carry 1); tens 0 + 4 + 7 + 1 = 12 (write 2, carry 1); hundreds 2 + 3 + 0 + 1 = 6; thousands 1 + 2 = 3. Answer 3 629. 6 734 comes from writing 345 in the wrong places.

For the teacher: Applying, medium difficulty, standard 2.1.2

Textbook p. 37

Question 3

7 000 − 2 465 = ______

4 535
5 465
4 645
5 535

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Regroup across the zeros: 7 000 = 6 thousands, 9 hundreds, 9 tens, 10 ones. 10 − 5 = 5, 9 − 6 = 3, 9 − 4 = 5, 6 − 2 = 4. Answer 4 535. Check: 4 535 + 2 465 = 7 000. 5 465 takes the smaller digit from the bigger one in every column.

For the teacher: Applying, medium difficulty, standard 2.2.1

Textbook p. 45

Question 4

A school canteen sells 245 packets of nasi lemak each day. How many packets does it sell in 6 days?

1 240
1 440
1 470
251

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6 × 245: 6 × 5 = 30 (write 0, carry 3); 6 × 4 = 24 + 3 = 27 (write 7, carry 2); 6 × 2 = 12 + 2 = 14. Answer 1 470. 1 240 and 1 440 forget the carried numbers; 251 adds 245 + 6 instead of multiplying.

For the teacher: Applying, medium difficulty, standard 2.3.1

Textbook p. 64

Question 5

4 700 ÷ 100 = ______

470
47
4 700
4

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Dividing by 100 takes off two zeros: 4 700 ÷ 100 = 47. Check: 47 × 100 = 4 700.

For the teacher: Remembering, low difficulty, standard 2.4.1

Textbook p. 69

Question 6

Puan Aini shares 83 rambutans equally into 6 baskets. How many rambutans are in each basket, and how many are left over?

13 remainder 5
13 remainder 3
12 remainder 11
14 remainder 1

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6 × 13 = 78 and 83 − 78 = 5, so 83 ÷ 6 = 13 remainder 5. 12 remainder 11 is wrong because the remainder must be smaller than 6; 6 × 14 = 84 is more than 83.

For the teacher: Applying, medium difficulty, standard 2.4.1

Textbook p. 70

Question 7

Aiman had 40 marbles. He gave some marbles to his brother. He has 16 marbles left. Which number sentence shows the story? (▲ is the number of marbles he gave away.)

40 + ▲ = 16
▲ − 40 = 16
16 − 40 = ▲
40 − ▲ = 16

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He starts with 40, takes away ▲ and has 16 left: 40 − ▲ = 16 (so ▲ = 24).

For the teacher: Understanding, low difficulty, standard 2.6.2

Textbook p. 58

Question 8

Diagram 2 shows two jumps on a number line, starting at 3 450. Which number sentence matches the number line?

Number line: start at 3 450, jump forward 1 200, then jump back 300 to a number marked ? — Diagram 2

3 450 − 1 200 + 300 = 2 550
3 450 + 1 500 = 4 950
3 450 + 1 200 − 300 = 4 350
3 450 + 1 200 + 300 = 4 950

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The first jump goes forward (+1 200) to 4 650. The second jump goes back (−300) to 4 350. So 3 450 + 1 200 − 300 = 4 350.

For the teacher: Analysing, high difficulty, standard 2.5.1

Textbook p. 51

Section B: structured questions

32 marks

Answer all questions. Show your working.

Question 9

Calculate. Show your working.

[2 marks] (a)3 586 + 2 947 = ______

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Correct column working with carries (ones 13, tens 13, hundreds 15) [1]1
3 586 + 2 947 = 6 533 [1]1

Tick each point you got.

[2 marks] (b)8 003 − 4 726 = ______

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Correct regrouping across the zeros (8 003 = 7 thousands 9 hundreds 9 tens 13 ones) [1]1
8 003 − 4 726 = 3 277 [1]1

Check: 3 277 + 4 726 = 8 003.

Tick each point you got.

For the teacher: Applying, low difficulty, standard 2.1.1

Textbook p. 34

Question 10

Solve these. Show your working.

[2 marks] (a)1 207 × 4 = ______

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4 × 7 = 28 (write 8, carry 2); 4 × 0 + 2 = 2; 4 × 2 = 8; 4 × 1 = 4 [1]1
1 207 × 4 = 4 828 [1]1

Tick each point you got.

[2 marks] (b)936 ÷ 4 = ______

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Long division: 9 ÷ 4 = 2 r 1; 13 ÷ 4 = 3 r 1; 16 ÷ 4 = 4 [1]1
936 ÷ 4 = 234 [1]1

Check: 234 × 4 = 936.

Tick each point you got.

For the teacher: Applying, medium difficulty, standard 2.3.1

Textbook p. 65

Question 11

Fill in the blanks.

[1 mark] (a)58 × 100 = ______

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5 800 [1]1

Tick each point you got.

[1 mark] (b)______ × 10 = 6 230

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623 [1]1

6 230 ÷ 10 = 623.

Tick each point you got.

[1 mark] (c)3 650 ÷ 100 = ______ remainder ______

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36 remainder 50 [1]1

36 × 100 = 3 600 and 3 650 − 3 600 = 50.

Tick each point you got.

For the teacher: Understanding, low difficulty, standard 2.4.1

Textbook p. 71

Question 12

Diagram 3 shows a number on an abacus. The top bead is worth 5 and each bottom bead is worth 1 when it touches the middle bar.

Abacus with four rods: thousands, hundreds, tens, ones — Diagram 3

[1 mark] (a)Write the number shown on the abacus.

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1 728 [1]1

Thousands: 1 bottom bead = 1. Hundreds: top bead + 2 bottom beads = 7. Tens: 2 bottom beads = 2. Ones: top bead + 3 bottom beads = 8.

Tick each point you got.

[1 mark] (b)Mei Ling adds 1 379 to the number. What is the total?

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1 728 + 1 379 = 3 107 [1]1

Ones 8 + 9 = 17 (write 7, carry 1); tens 2 + 7 + 1 = 10 (write 0, carry 1); hundreds 7 + 3 + 1 = 11 (write 1, carry 1); thousands 1 + 1 + 1 = 3.

Tick each point you got.

For the teacher: Applying, medium difficulty, standard 2.1.1

Textbook p. 33

Question 13

Diagram 4 shows the number of ketupat sold at a bazaar Ramadan stall in three days.

Bar chart: Friday 1 250, Saturday 2 175, Sunday 1 480 ketupat — Diagram 4

[1 mark] (a)How many ketupat were sold in the three days altogether?

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1 250 + 2 175 + 1 480 = 4 905 [1]1

Tick each point you got.

[1 mark] (b)How many more ketupat were sold on Saturday than on Friday?

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2 175 − 1 250 = 925 [1]1

Tick each point you got.

For the teacher: Applying, medium difficulty, standard 2.1.2

Textbook p. 37

Question 14

At a kenduri, Mak Long packs 1 350 pieces of kuih into boxes. Each box holds 8 pieces.

[1 mark] (a)How many boxes are full?

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1 350 ÷ 8 = 168 remainder 6, so 168 boxes [1]1

Tick each point you got.

[1 mark] (b)How many pieces of kuih are left over?

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6 pieces [1]1

Check: 168 × 8 = 1 344 and 1 344 + 6 = 1 350.

Tick each point you got.

For the teacher: Applying, high difficulty, standard 2.7.3

Textbook p. 76

Question 15

Zoo Negara printed 2 500 tickets for Saturday. 1 680 tickets were sold. Diagram 5 shows the information. ▲ is the number of tickets not sold.

Bar model: 2 500 tickets printed, split into 1 680 sold and ▲ not sold — Diagram 5

[1 mark] (a)Write a number sentence with ▲.

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1 680 + ▲ = 2 500 or 2 500 − 1 680 = ▲ (accept 2 500 − ▲ = 1 680) [1]1

Tick each point you got.

[1 mark] (b)Find the value of ▲.

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▲ = 2 500 − 1 680 = 820 [1]1

Tick each point you got.

For the teacher: Analysing, medium difficulty, standard 2.6.2

Textbook p. 58

Question 16

Diagram 6 shows how Adam worked out 6 042 − 2 718.

Adam's working: 6 042 minus 2 718 with answer 4 736 — Diagram 6

[1 mark] (a)Is Adam's answer correct?

AYesBNo

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6 042 − 2 718 = 3 324, not 4 736.

[1 mark] (b)Explain Adam's mistake.

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He took the smaller digit from the bigger digit in each column (e.g. 8 − 2 in the ones) instead of regrouping when the top digit was smaller [1]1

Tick each point you got.

[1 mark] (c)Write the correct answer. Show your working.

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Regroup: 12 − 8 = 4, 3 − 1 = 2, 10 − 7 = 3, 5 − 2 = 3, so 6 042 − 2 718 = 3 324 [1]1

Check: 3 324 + 2 718 = 6 042.

Tick each point you got.

For the teacher: Evaluating, high difficulty, standard 2.2.1

Textbook p. 47

Question 17

Diagram 7 shows 4 trays of eggs. Each tray has 125 eggs.

Four trays, each labelled 125 eggs — Diagram 7

[2 marks] (a)Create a story for the number sentence 4 × 125 = 500.

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Pak Abu sells eggs at the pasar malam. He has 4 trays. Each tray has 125 eggs. He has 500 eggs altogether.

Story has 4 equal groups of 125 (e.g. a shopkeeper at the pasar malam has 4 trays with 125 eggs on each tray) [1]1
Story ends with the total 500 (e.g. he has 500 eggs altogether) [1]1

Tick each point you got.

For the teacher: Creating, high difficulty, standard 2.7.1

Textbook p. 73

Question 18

Mixed addition and subtraction.

[2 marks] (a)5 362 − 1 485 + 607 = ______

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Work from left to right: 5 362 − 1 485 = 3 877 [1]1
3 877 + 607 = 4 484 [1]1

Tick each point you got.

[1 mark] (b)Write + or − in each circle to make the number sentence true.
2 450 ◯ 380 ◯ 125 = 2 705

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2 450 + 380 − 125 = 2 705 [1]1

2 450 + 380 = 2 830 and 2 830 − 125 = 2 705. The other choices give 2 955, 2 195 and 1 945.

Tick each point you got.

For the teacher: Applying, medium difficulty, standard 2.5.1

Textbook p. 52

Question 19

Cikgu Lina has some boxes of pencils. Each box has 8 pencils. There are 96 pencils altogether. ★ is the number of boxes.

[1 mark] (a)Write a number sentence with ★.

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★ × 8 = 96 (accept 8 × ★ = 96 or 96 ÷ 8 = ★) [1]1

Tick each point you got.

[1 mark] (b)Find the value of ★.

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★ = 96 ÷ 8 = 12 [1]1

Check: 12 × 8 = 96.

Tick each point you got.

For the teacher: Understanding, low difficulty, standard 2.6.2

Textbook p. 77

Question 20

A bakery makes 1 245 buns on Monday. On Saturday it makes 4 times as many buns as on Monday.

[2 marks] (a)How many buns does the bakery make on Saturday?

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4 × 1 245 with working: 4 × 5 = 20 (write 0, carry 2); 4 × 4 + 2 = 18 (write 8, carry 1); 4 × 2 + 1 = 9; 4 × 1 = 4 [1]1
4 × 1 245 = 4 980 buns [1]1

Tick each point you got.

[1 mark] (b)How many buns does it make on Monday and Saturday altogether?

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1 245 + 4 980 = 6 225 buns [1]1

Tick each point you got.

For the teacher: Applying, high difficulty, standard 2.7.3

Textbook p. 75

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