NEW WAVE MENTAL MATHS (BOOK E) – ANSWERS

9. 303 303 $14.50

15. 10 000 110 18. 1028
10. 0.4 9. true
18. 16. 18 19. 800
11. hexagon 10. 1 010 011
19. acute 17. 26.5 20. 50
12. 200, 10, 4, 214 11. 5 000 050
20. 31 July 18. 180 000 21. 136
13. 325 12. 7.21, 7.35
21. Teacher check 19. 60 m 22. February, July,
14. 50 13. 2.7
22. 360° 20. 4 September, November
15. 24 14. 1
23. 40 21. 9 6 23. June
22. A is 3D 15. 4 58 24. November
16. B is 2D 16. $4.50 25. March, December
24.
17. 67.5 23. 28 17. 2.1
25. 8
18. $150 24. 30 18. west WEEK 37 – pages 110–112
19. 0.2 25. Teacher check 19. 120
WEEK 35 – pages 104–106 MONDAY
20. 400 000 20. DCA
MONDAY WEEK 36 – pages 107–109 THURSDAY 1. 58
THURSDAY 2. 72
1. 1100 1. 1100 1. 30
MONDAY 3. 36 cm
2. 1.8 2. 0.011 2. ÷
1. 90 4. 64
3. 30 000 3. 2 800 000 3. B
2. 52.35 5. $5.50
4. 10.0 4. 81, 90, 108 3. 7 6. 1 34
5. 800 729 5. 89.55 4.
4. Teacher check 7. 27.3
6. 29 6. 2 5. 40
3 5. 585, 615 8. 0.273
7. A and B 6
6. 87 100 6. 3 12
8. 95
2 7. 8
7. 87 000 7. 4.06 9.
9. 2 8. 0.6
8. 340 827 8. 36.52 10. 2
10. 14 9. 621 3
9. 56 9. true 11. 1 000 000
11. 15 396 10. 450
10. 7 10. 10.57, 11.21, 11.33 12. 2200
12. 5 11. 1 in 2 or 12 , or 50%
11. 400 kg 11. 84 13. 7 × 8 = 56
13. 30 or 0.5
12. 3 12 12. odd 14. 32
14. true 12. 30
13. 100 099 13. 50 m 15. 1.5
15. yes 13. 4
14. true 14. 432 16. 67 000
16. no 14. 60 m2 4
15.
1 15. 5 17. 560
17. triangular pyramid 15. Teacher check 5
16. false
18. 114 16. 5 46 or 5 23 16. 16 cm3 18. A = 12, B = 12,
17. 1200
19. 464, 496 17. 4 58 17. 9215 C = 12, D = 12
18. 2 18. 90 19. (a) north-west
20. 3 tulips for $19.50 18. 0.88 3
19. 100, 44, 36, 28 19. January, February (b) south-east
19. 24 ÷ 8 = 3
TUESDAY 20. 68 20. July, May 20. (a) north-east
20. 9 909 019
1. 1000 TUESDAY
PROBLEM-SOLVING (b) south-west
PROBLEM-SOLVING
2. 4.1 Monday
Monday 1. 350 TUESDAY
3. 909 009 1. 36
1. Teacher check 2. 3 1. 71
4. 1 25 2. 36
2. Teacher check 3. 64 2. 6072
5. 2 24 8 Tuesday
Tuesday 4. 27, 9 3. 3.972
6. 9.282 1. 13 April, 0830
1. G, R, R, R 5. 70 000
7. 15 2. 36
2. Teacher check 6. 1.07
8. 150 Wednesday 4.
Wednesday 7. 0.6 8
1. $10.50 5.
8. 470 10
2. 32 6. A = 6, B = 5, C = 8
9. 1. 9. 5 12
Thursday 7. Teacher check
10. 6 2. 650 km 10. 7800
1. 8 8. 53
11. 25 minutes Thursday 11. $250
2. 3000 9. $9.50
12. 1.1 1. 80 12. 8.33, 8.48
10. 60, 75
13. 120 5 8 13. 3 FRIDAY REVIEW
11. 100 000
14. Teacher check 14. 0.279 1. 671
2. 17 12 1 12. Teacher check
15. 0.3 seconds 15. 4 2. 1 25
FRIDAY REVIEW 13. 2
16. 3 23 16. $2.50 3. 3
1. 1030 14. 3
17. 0.7 17. 0.4 4. 29 768
2. 623 1 15. 40
18. 24, 12, 8, 6 18. 3.8 5. 22
3. 2 48 3 16. 61 100
19. 95 12 19. 16 6. 4
4. 6 17. 1100
20. 68 20. 85.5 7. 0.365
5. 8.23 18. 3m
WEDNESDAY WEDNESDAY 8. 112
6. 0.2 19. 4m
2 9. 82
1. 96 20. 34 m
7. 7100 10. 1
2. 477 1. 8
WEDNESDAY
8. 600 11. $5.50
3. 24.47 2. 7.0 1.
5 9. 7 24 or 7 12 12. 5 24 34
4. 3. 40 2. 997
10 10. 76.5 13. 80 000
5. A 4. 800 3. 60
11. 97 611 14. 17, 2
6. 4 5. 90° 4. false
12. 40 15. $7.50
7. 250 6. false 5. 27
13. 4 16. 4 roses for $28.74
8. 8t 7. 72 6.
14. 2 26 17. ÷ 182
8. three ice creams for 7. 96

R.I.C. Publications® www.ricpublications.com.au 67 978-1-921750-06-9 NEW WAVE MENTAL MATHS TEACHERS GUIDE