Tiêu đề ANSWER KEY.pdf ✅

1. PATTERNS 1 a) 296, 888 b) 445, 1336 c) 9, 13 d) 65, 82 e) 29, 22 f) 37, 50 2 2 + 12 = 14 14 + 12 = 26 26 + 12 = 38 38 + 12 = 50 50 + 12 = 62 3 a) 11 b) 7 c) 2 7 × 6 = 42, 9 × 9 = 81, 5 × 3 = 15, 6 × 2 = 12. 4 10 5 9 6 36 7 C 8 D 9 a) 22 b) 202 c) 65 d) 143 10 15 2. TREE PLANTING 1 50 2 57 3 14 4 32 5 100 6 18 7 9 8 5 9 61 10 31 REVIEW 1 1 36 2 200 3 510 4 1393 5 15 6 5 2 3 10 6 4 1 11 1 9 2 12 12 15 6 33 7 200
3. CRYPTARITHM 1 5 2 1009 3 842 4 721 5 15 6 1296 7 92 8 17 9 14 10 10 4. NUMBER MANIPULATION 1 8 2 45 3 a) 17850 b) 135 c) 15 d) 126 e) 330 f) 0 4 a) 1 b) 206 5 57 6 240 7 5050 8 707 9 1290 10 392 5. NUMBERS AND DIGITS 1 93 2 192 3 901 4 44 5 757 6 83 7 226 8 774 9 95 10 254
REVIEW 2 1 101 2 100 3 321 4 26 5 53 and 54 6 62 7 42 and 43 6. FRACTION 1 a) 32 505 b) 7 36 2 15 3 36 37 4 210 5 2325 2 6 Pi: 150, Ksi: 100 7 450 8 10 9 90 10 7 6 7. PERCENTAGE 1 600 2 1600 3 400 3 4 375 5 748 6 2250 7 1200 8 56 9 300 10 1938
REVIEW 3 1 a) 115 b) 63 64 c) 14 2 135 3 19 60 4 46 5 280 6 820 7 480 8. MODELS 1 1847 2 47 3 Jonathan: 23, Joseph: 27 4 78, 64, 48 5 59 6 35 7 John: 374, Kim: 426 8 Red: 72. Blue: 216. White: 18 9 20% 10 390 9. DATA ANALYSIS 1 4 2 a) Victor b) 385 c) 220 3 4 4 a) 120 b) 20 c) Wednesday and Thursday 5 3 6 a) 82 b) $656000 7 1200 8 56 9 The mean is 20.2 pounds greater than the median. 10 1938