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11 Calculează, respectând regulile învățate. a. 12 x 10:4+ (190-30): 8+ (202: 2 + 33 x 3) : 100 b. (9 x 7+7 x 8) x 4-(404:4+44:4): 2 c. 1 000 (250: 2 + 25 x 3) x 3 - (25+15 x 5) x 4 - d. 23 x (157-24 x 6) - 477:3- (22+ 220 : 2) e. 135 + 5 000: (1385-385) + 3x (40 +8:2) f. 36 +0: (125 x 25 - 25 x 25) + 33 x 3-33:33 + 33:3 g. 909-909 x (102 - 909:9+0:1)-99 x (9x9:9-9) h. 3x (6-6: 2) + 305:5+ (100:5+ 8× 5 ×0): 5 i. 138+ (27:3-1) x 2:8-2x (100- 195:15) × 2 î. 7+7:7 x (7-7:7) x 7:7 j. (202:2+ 101 x 2):3-2x (2-2:2) k. 36+ 8x (100-47-53 + 2 x 18): (13-36:9) 1. 1 000: (74 +26) + 100 x (8 + 2) - (2 x 286 + 2 x 214) m. 425 (600 - 595) - (81:9 + 71 x 1) + (4 x 11-66:2) n. 35+1 000: (15 x 25 - 25 x 25) + 3x (40+8:2) o. 550:10 + 20 x (81:9 + 9) - 20: (6 × 7-11 × 2) P. 82 +9x (5 x 5-5): (5+5 x 5-4 x 5): (9-81:9 +90:10) 0.15-3x6: (3 x 3 x 3:3+0:5) + 30: (3:3+5)​