Page 45 - Genius PBD - Mathematics Year 4

ANSWERS

Numbers and (c) 6 ten thousands + 19. (a) 5 700; 12 300; 52 100
UNIT 1 Operations 9 thousands + 0 hundreds (b) 6 000; 12 000; RM57 000
+ 4 tens + 4 ones 20. (a) 43 650; 43 700; 44 000;
1. 8. (a) 48 143 (b) 8 217 40 000
(c) 46 392 (b) 97 130; 97 100; 97 000;
100 000
9. (a) 96 563 (b) 72 149
(c) 86 099 21. (a) 67 882
(b) 59 417
10. (a) 29 643, 46 921, 50 948,
2. (a) 67 215 (b) 30 207 (c) 77 590
76 492
(c) 45 098 (b) 56 728, 63 291, 66 099, (d) 66 422
3. (a) 56 914; Fifty-six thousand 82 718 (e) 98 751
nine hundred and fourteen (c) 86 493, 62 133, 49 948, (f) 66 514
(b) 70 243; Seventy thousand 29 172 22. (a) 53 (b) 36
two hundred and forty- 11. (a) 57 096, 57 582
three (b) 12 094, 15 618 (c) 9

4. The place The place 12. (a) 21 094, 20 916 23. (a) 28 455
(b) 41 800
value for value for (b) 55 094, 54 415
digit 4 digit 7 (c) 88 710
13.
(a) tens ones (d) 24 094
(e) 2 693
(b) ten
hundreds (f) 43 089
thousands
24. (a) 51
(c) ten thousands (b) 77
thousands
14. Even numbers: (c) 23
(d) thousands hundreds 2, 10, 26, 32, 44, 68, 94, 100 25. (a) 38 008
Odd numbers:
5. (a) 700 (b) 80 (b) 25 142
(c) 50 000 (d) 3 3, 5, 21, 37, 43, 49, 97, 101 (c) 49 275
(e) 4 000 (f) 9 15. (a) increases; fives (d) 87 997
(g) 60 000 (h) 200 (b) increases; tens 26. (a) 93 684
6. (a) 70 000 + 900 + 40 + 8 (c) decreases; eights (b) 87 048
(b) 90 000 + 3 000 + 200 + 16. (a) Decreases by threes (c) 38 270
40 + 5 (b) Increases by hundreds (d) 59 661
(c) 60 000 + 8 000 + 700 + (c) Increases by eights (e) 93 340
20 + 4 17. (a) 16 568; 16 570 (f) 22 883
(d) 20 000 + 500 + 9 (b) 24 165; 24 175 27. (a) 56 720
7. (a) 3 ten thousands + (c) 75 131; 75 125 (b) 69 850
6 thousands + 2 hundreds (d) 82 943; 81 943 (c) 42 500
+ 1 tens + 9 ones
(e) 67 119; 67 019 (d) 94 900
(b) 7 ten thousands + 18. (a) 50
0 thousands + 9 hundreds (e) 32 000
+ 4 tens + 0 ones (b) 2 litres (f) 60 000

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10 ANS Genius PBD Maths Yr4.indd 1 26/10/2022 2:53 PM