1) Quanto é 900x40? a) 36,000 b) 11,000 c) 9,000 d) 26,000 e) 40,000 f) 23,000 2) Quanto é 90 x 62-700? a) 3,760 b) 4,897 c) 2,400 d) 5,740 e) 3,120 f) 4,880 3) Quanto é 600-50 x 91? a) -3,950 b) -2,840 c) -4,200 d) -3,550 e) -1,429 f) -5,300 4) Quanto é 65 x 43 + 30? a) 2,825 b) 1,820 c) 4,200 d) 1,685 e) 2,420 f) 3,153
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