Page 35 - Genius PBD - Mathematics Year 1

Mathematics Year 1 Answers

16. (a) 1, 2, 3, 4, 5, 6 7. (a) 6
(b) 25, 24, 23, 22, 21, 20 (b) 4 + 8 = 12
(c) 58, 59, 60, 61, 62, 63 (c) 9 + 8 = 17
17. (a) 4; 6 8. (a) 11
(b) 16; 14; 13 (b) 13
18. (a) 14; 16 (c) 16
(b) 16; 12; 10 (d) 15
19. (a) 50; 60 (e) 17
(f) 12
(b) 75; 65; 60
9. (a) 86 (b) 45 (c) 92
20. (a) 40; 60; 80 8 2 9 7 4
(b) 71; 51; 41 + 4 + 3 6 + 1 8
21. (a) Number 3 and 4 are arranged repeatedly.
(b) Count back in elevens from 77 to 22. 8 6 4 5 9 2
22. (a) 2; 4; 2 (d) 17 (e) 59 (f) 19
(b) 11; 22; 33 2 1 5 9 4 8
23. (a) 15 (b) 30 + 1 7 + 3 2 + 1 9
24. Hidden slogan: 3 8 9 1 6 7
I LIKE MATHEMATICS
25. Most 10. (a) There were 8 eggs. 3 eggs were broken. The
number of eggs left was 5.
26. Student’s answers. (b) There are 11 lighted candles. The flames of 5
27. (a) 12 (b) 44 candles went out. The number of lighted candles
28. Student's answers left is 6.
(c) There were 12 ice-creams. 4 ice-creams were
eaten. The number of ice-creams left was 8.
UNIT 2 Addition and Subtraction
11.
1. (a) 13
(b) 6
2. (a) +
(b) =
3. (a) 6 + 2 = 8
(b) 3 + 2 = 5 12. (a) 6 (b) 2 (c) 9
4. (a) 5 13. (a) 3 (b) 2 (c) 4
(b) 8 (d) 3 (e) 2 (f) 2
(c) 7 (g) 0 (h) 4
5. (a) 5
(b) 6 14. 13 – 4 ✓
(c) 5 9 – 0 ✓
(d) 8
(e) 9 49 – 40 ✓
(f) 6 54 – 45 ✓

6. 6 0 4 4 9 9 5 0 26 – 17 ✓
3 4 1 8 2 3 1 9 15. (a) 21 (b) 43 (c) 64
7 4 3 2 6 4 5 3 (d) 79 (e) 57 (f) 18
(g) 80 (h) 28 (i) 49
1 9 5 0 5 2 6 0 2 14 5 13
2 7 9 8 4 4 2 4 9 6 3 4 6 3
– 1 6 – 6 – 1 4
3 4 4 3 1 0 8 3
4 3 2 3 6 6 1 7 8 0 2 8 4 9
2 9 0 1 4 2 9 2

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09 Answers Genius PBD Y1.indd 2 31/10/2022 1:30 PM