Respuestas
a) 132
1 Simplifica 75-5075−50 a 2525.
8\times 25+42\div 6-15(7-2)
8×25+42÷6−15(7−2)
2 Simplifica 7-27−2 a 55.
8\times 25+42\div 6-15\times 5
8×25+42÷6−15×5
3 Simplifica 8\times 258×25 a 200200.
200+42\div 6-15\times 5
200+42÷6−15×5
4 Simplifica 42\div 642÷6 a 77.
200+7-15\times 5
200+7−15×5
5 Simplifica 15\times 515×5 a 7575.
200+7-75
200+7−75
6 Simplifica 200+7200+7 a 207207.
207-75
207−75
7 Simplifica.
132
132
b) 34
1 Simplifica 30-1830−18 a 1212.
120\div 12\div 2\times 8-18\div (5-2)
120÷12÷2×8−18÷(5−2)
2 Simplifica 5-25−2 a 33.
120\div 12\div 2\times 8-18\div 3
120÷12÷2×8−18÷3
3 Simplifica 120\div 12120÷12 a 1010.
10\div 2\times 8-18\div 3
10÷2×8−18÷3
4 Simplifica 10\div 210÷2 a 55.
5\times 8-18\div 3
5×8−18÷3
5 Simplifica 5\times 85×8 a 4040.
40-18\div 3
40−18÷3
6 Simplifica 18\div 318÷3 a 66.
40-6
40−6
7 Simplifica.
34