Page 31 - Genius PBD - Mathematics Year 3

Mathematics Year 3 Answers

UNIT 2 Addition, Subtraction, Multiplication and (c) 6 321
In box A, there are 5 438 marbles, whereas in

Division
box B there are 2 972 marbles less than box A.
1. (a) 1 325 + 2 032 = 3 357 The number of marbles in box C is 3 855 more
(b) 4 532 + 3 366 = 7 898 than box B, which is 6 321.
(c) 2 400 + 173 = 2 573
(d) 2 078
2. (a) 5 575 • • • • A library has 6 200 storybooks and 750
(b) 4 698 • • • • academic books. 4 872 books are going to be
discarded. The number of books left is 2 078.
(c) 4 449 • • • •
Any other reasonable answers can be accepted for
(d) 6 291 • • • • Question 11.
(e) 7 801 • • • • 12. (a) 6 401 soy milk boxes
3. (a) 1 647 + 2 854 + 3 998 = 8 499 (b) 2 555 calculators B
(b) 2 104 + 1 321 + 3 050 = 6 475 (c) (i) ✓
4. (a) 5 897 (ii) 980 cookery books
(b) 6 405
(c) 5 108 13. (a) Unknown: Number of storybooks read by Farah.
(d) 1 345 Mathematical sentence: 24 + = 56
(e) 2 345 (b) Unknown: Number of boxes of coffee biscuits.
Mathematical sentence: 19 – = 7
5. (a) 3 648 – 1 423 = 2 225
(b) 9 775 – 6 251 = 3 524 (c) Unknown: Original number of erasers on the
(c) 8 967 – 6 534 = 2 433 stationery rack
(d) 7 820 – 180 = 7 640 Mathematical sentence: – 75 = 120
(d) Unknown: Number of Adam’s stamps
6. (a) 3 500
(b) 5 450 Mathematical sentence: + 50 = 250
(c) 1 211 14. (a) 4 × 2 000 = 8 000
(d) 4 001 (b) 5 × 1 200 = 6 000
7. (a) 7 434 15. (a) (b) (c) (d) (e)
(b) 4 789 28 63 96 92 87
(c) 2 874 • • • • •
(d) 2 189
(e) 6 598 • • • • •
(f) 3 211
8. (a) 7 698 – 2 324 – 3 350 = 2 024 16. (a) 1 016
(b) 2 563 (b) 1 592
(c) 2 684 (c) 8 020
(d) 4 662 17. (a) 4 520
(e) 7 510 (b) 4 296
(f) 1 305 (c) 5 752
(g) 4 896 (d) 8 547
9. (a) 22 + 9 – 4 = 27 (e) 100
(b) 183 – 3 + 7 = 187 (f) 7
10. (a) 1 335 (c) 6 428 18. (a) 40 ÷ 5 = 8
(b) 3 586 (d) 8 520 (b) 5 000 ÷ 1 000 = 5
(c) 30 ÷ 10 = 3
11. (a) 2 032
There are 1 680 packets of wheat flour and 352 19. (a) 121
packets of rice flour in a warehouse. The total (b) 128 remainder 3
number of packets of flour in the warehouse is (c) 972
2 032. (d) 853
(b) 3 763 (e) 9
A factory produces 5 001 pairs of shoes. 1 238 (f) 100
pairs of shoes were distributed to supermarkets. 20. (a) 648
The remainder of shoes in the factory is 3 763 (b) 1 615
pairs. (c) 196

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