1 Calculează: a) (17x9+24×8-891:27):3= 4641 b) (528: 24+420 : 3 + 11×17) 15 = 32 35 c) 5x47+ 12×95-725:25= 1 346 1 d) (247 + 743): 45+4x (276-197) = 338 e) 9×(17×4+27) -(105+75 +65) : 5 = 806 f) [1 500 + 27 x (639: 9) - (536: 8)]: 10 = [335] g) [(63 + 19x24): 3+ 464: 4-11x11] 25 = 38800 h) 160-4x [15+5x (265-4x65)] = [TI i) (243 × 15:27 +26 664: 24): (900: 36-23) = j) [(1 473-589 +2 907-3 247): 32+ (61x35-55x35) ] × 100 = k) [(311 + 114-100): 5+ (70+84x5:4)]-230 = 1) 2 099 +1-(109 +1-672:7) x4 +6:6= m) [187-(366:6+3): 8]x3-500+ 625 : 5 = n) 113 x 4+ [136 x 75-(324:4:9x3+45) +246-123: 3] = o) [142x5-(1 122: 11-707 : 7) x 125]: 15:3= p) [(812-8 750: 25): 22] x 103 -1 094 = q) (126 x 32 + 89 x 63): [105 324-89 113-(230 x 68 +7 x 70)] = r) [(964 × 12 + 36 x 12): 100 + 72 x 6]: 24- (12 696: 24-2x253) = s) [(6 027: 21-1 480: 40): 25x (48x45: 15)] : 24 = t) [6 x 10 x 100-(25x4-40) x 5] -(10x10x7 + 120:3×35) = u) [12 x 44+ (750 + 450:6 + 27:9): 6]:2+4= v) [12 x 33 + 4x (950-250 x 3 + 4)]: 3 + 47 × 13 = repede va rog mult dau coroană!​