Formal written multiplication and division – Year 5 maths test answers to download as PDF

← Back to the test

1. Answer to Question 1 (4 marks)

   (a) Multiplying by 100 moves the digits two places left: 6,300. (1 mark)

   (b) Dividing by 100 moves them two places right: 49. (1 mark)

   (c) Multiplying by 1,000 moves the digits three places left: 805,000. (1 mark)

   (d) Dividing by 10 moves them one place right: 7,200. (1 mark)

2. Answer to Question 2 (4 marks)

   (a) 2,816 × 7 = 19,712. (1 mark)

   (b) 45 × 6 = 270 and 45 × 30 = 1,350. Add: 270 + 1,350 = 1,620. (2 marks)

   (c) Estimate 60 × 30 = 1,800. Exact: 62 × 29 = 1,798. (1 mark)

3. Answer to Question 3 (4 marks)

   (a) Short division: 18 ÷ 6 = 3, 4 ÷ 6 = 0 remainder 4, 48 ÷ 6 = 8. Answer 308; check 308 × 6 = 1,848. (1 mark)

   (b) 7 × 142 = 994 and 1,000 − 994 = 6, which is less than 7. Answer: 142 remainder 6. (2 marks)

   (c) 142 boxes hold 994 pencils, and the 6 left over still need a box. So the remainder means rounding up: 143 boxes. (1 mark)

4. Answer to Question 4 (3 marks)

   (a) 400 × 20 = 8,000. Lee's answer is too big. (1 mark)

   (b) 378 × 4 = 1,512 and 378 × 20 = 7,560. Add: 9,072. (1 mark)

   (c) 9,972 − 9,072 = 900, so Lee may have made an error when adding the carried hundreds in one of the columns. (1 mark)

5. Answer to Question 5 (5 marks)

   (a) 15 × 12 = 180 chairs. (1 mark)

   (b) 168 × 4 = £672. (1 mark)

   (c) 168 ÷ 25 = 6 remainder 18, so 6 full books and the last book (the 7th) has 18 tickets in it. (2 marks)

   (d) 100 ÷ 2 = 50 packs, and 50 × 5 = 250 sandwiches. (1 mark)

Total : 20 marks