calcule o valor das expressões
A) 15+(7.2-3).(10:2+3)-2
B) [20+(20:2-3)+30]-12
c){120-[35:(10+5-8).10] +32 {
20+{40-(27-5.3)+3].5 }
Respostas
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A) 15+(7.2-3).(10:2+3)-2 =
\ / \ /
15+(14-3).( 5 +3)-2 =
15+(11) . (8)-2 =
\ /
15+ 88 -2 =
\ /
103 -2 =
\ /
101
B) [20+(20:2-3)+30]-12 =
\ /
[20+( 10 -3) +30] -12=
\ /
[20 + 7 +30] -12 =
\ | /
57 -12 =
\ /
45
c){120-[35:(10+5-8).10] +32 =
\ | /
{120-[35: 7 . 10] +32 =
\ /
{120-[ 5 . 10 ] + 32 =
\ /
{120 - 50 + 32 =
\ /
70 + 32 =
\ /
102
d) {20+{40-(27-5.3)+3].5} =
\ /
{20+[40-(27 -15)+3}.5} =
\ /
{20+[40 - 12 +3].5} =
\ | /
{20+ 31 . 5} =
\ /
20 + 155 =
\ /
175
\ / \ /
15+(14-3).( 5 +3)-2 =
15+(11) . (8)-2 =
\ /
15+ 88 -2 =
\ /
103 -2 =
\ /
101
B) [20+(20:2-3)+30]-12 =
\ /
[20+( 10 -3) +30] -12=
\ /
[20 + 7 +30] -12 =
\ | /
57 -12 =
\ /
45
c){120-[35:(10+5-8).10] +32 =
\ | /
{120-[35: 7 . 10] +32 =
\ /
{120-[ 5 . 10 ] + 32 =
\ /
{120 - 50 + 32 =
\ /
70 + 32 =
\ /
102
d) {20+{40-(27-5.3)+3].5} =
\ /
{20+[40-(27 -15)+3}.5} =
\ /
{20+[40 - 12 +3].5} =
\ | /
{20+ 31 . 5} =
\ /
20 + 155 =
\ /
175
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