1) 2 + 8 – 3 – 5 + 15 =
2) 12 + [35 - (10 + 2) +2] =
3) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 =
4) 37 + [-25 – (-11 + 19 – 4)] =
5) 42 + 33 – 60 x [-7 + (-3 + 12)] =
6) -8 + {-5 + [(13 + 12)] – 10} =
7) 25 + 6 2 : 12 - √81 + 42 =
8) 25 + 36 : 12 - 13 + 42 =
9) {64 – [5 + 7 . 1 ]} + √100 =
10) 4 + 25 – 10 + 17 =
Soluções para a tarefa
Resposta:
1)17
2)agorinha respondo o resto vou terminar e ja mando
1) 2 + 8 – 3 – 5 + 15 =
2+8 = 10
10 - 3 = 7
7-5 = 2
2+15 = 17
2) 12 + [35 - (10 + 2) +2] =
(10+2) = 12
12 + 2 = 14
[35-14] = 21
12+ 21 = 33
3) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 =
(18+3 = 21 . 2 = 42)
42 ÷ 8 = 5,25
5,25 + 5 = 10,25 . 3 = 30,75
30,75 ÷ 6 = 5,125
4) 37 + [-25 – (-11 + 19 – 4)] =
(-11+19 = 8 - 4 = 4)
-25+4 = -21
37 - 21 = 16
5) 42 + 33 – 60 x [-7 + (-3 + 12)] =
(-3+12 = 9)
-7 + 9 = 2
42 + 33 = 75 - 60 = 15
15 x 2 = 30
6) -8 + {-5 + [(13 + 12)] – 10} =
{-5+ [13 + 12 = 25] - 10}
-5 + 25 = 20
20 - 10 = 10
-8 + 10 = 2
7) 25 + 62 : 12 - √81 + 42 =
25 + 62 = 87 ÷ 12 = 7,25
7,25 × √81 = 65,25 + 42 = 107,25
8) 25 + 36 : 12 - 13 + 42 =
25 + 36 = 61
61 ÷ 12 = 5,08
5,08 - 13 = -7,92
-7,92 + 42 = 34,08
9) {64 – [5 + 7 . 1 ]} + √100 =
[5 + 7 = 12 . 1 = 12]
{64 - 12 = 52}
52 + √100 = 62
10) 4 + 25 – 10 + 17 =
4 + 25 = 29
29 - 10 = 19
19 + 17 = 36