1. Calculează: = (123x(5+27x6)]-99 = (365+(19x27-38): 5) = (18x(475x18-10): 9) = 8 000x[100-(26x2+2)) = 1 000 000-[100 050 :(500-30x15)] = [9 001+(10x278:20)]-1 140 = 500x[5 000-(555:5+4 889] = 1980: (2000-(100x17:25+1 842)]= 256x15-((7000-723x4-8): 100)] = 3000x26+[9–3x2+(112201-100)] = 60x395-30x [1 019-19x(5+3x3)] = [(30 000-(3 000–300x3):7]: 100 = =
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