Mais exercícios!!!!

Mais exercícios...

1) 7 – ( 1 + 3)
2) 9 – ( 5 – 1 + 2)
3) 10 – ( 2 + 5 ) + 4
4) ( 13 – 7 ) + 8 – 1
5) 15 – ( 3 + 2) – 6
6) ( 10 – 4 ) – ( 9 -8) + 3
7) 50 – [ 37 – ( 15 – 8 ) ]
8) 28 + [50 – (24 – 2) -10 ]
9) 20 + [ 13 + (10 – 6) + 4]
10) 52 – { 12 + [ 15 – ( 8 – 4)]}
11) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]}(R:39)
12) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 (R:18)
13) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} (r 41)
14) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } (R:54)
15) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 (R:93)
16) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} ( R:36)
17) 26 + { 12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 } (r:28)
18) 25-[10 + (7 - 4)] R 12
19) 32+ [10-(9-4)+8] R:45
20) 45-[12-4+(2+1)] R:31
21) 70-{20-[10-(5-1)]} R:56
22) 28 + {13 - [6 -(4 + 1) + 2] - 1 } R:37
23) 53-{20-[30-(15-1+6) + 2 ]} R:45