Expressões Numéricas

ADIÇÃO E SUBTRAÇÃO

1) Calcule o valor das expressões

a) 10-1+8-4= x

b) 12-8+9-3= x

c) 25-1-4-7= x

d) 45-18+3+1-2= x

e) 75-10-8+5-1= x

f) 10+5-6-3-3+1= x

3) Calcule o valor das expressões

a) 30-(5+3) = x

b) 15+(8+2) = x

c) 15-(10-1-3) =x

d) 23-(2+8)-7 = x

e) (10+5)-(1+6) = x

f) 7-(8-3)+1= x

4) Calcule o valor das expressões

a) 25-[10+(7-4)] = x

b) 32+[10-(9-4)+8] = x

c) 45-[12-4+(2+1)] = x

d) 70-{20-[10-(5-1)]} = x

e) 28+{13-[6-(4+1)+2]-1} = x

f) 53-{20-[30-(15-1+6)+2]} = x

g) 62-{16-[7-(6-4)+1]} =x

h) 20-{8+[3+(8-5)-1]+6} = x

i) 15+{25-[2-(8-6)]+2} = x

j) 56-[3+(8-2)+(51-10)-(7-2)] = x

6)Calcule o valor das expressões:

a) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} = x

b) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 = x

c) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} = x

d)45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } = x

e) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 = x

f)38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} = x

g) 26 + { 12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 } = x

COM QUATRO OPERAÇÕES

4) Calcule o valor das expressões

a) (3+2)x(5-1)+4 = x

b) 82-8x7:(4-1x3) = x

c) 25-[10-(2x3+1)] = x

d) 70-[12+(5x2-1)+6] = x

e)8:2+[15-(4x2+1)] = x

f)9+[4+2x(6-4)+(2+5)]-8 = x

g) 50+{10-2x[(6+4:2)-(10-3)]} = x

h)180:{10+2x[20-45:(13-2x5)]} = x

7) Calcule o valor das expressões:

a) 16+[10-(18:3+2)+5] = x

b) 25-[12-(3x2+1)] = x

c) 90-[25+(5x2-1)+3] = x

d) 45+[(8x5-10:2)+(18:6-2)] = x

e) 50-2x{7+8:2-[9-3x(5-4)]} = x

f) 100-3x{5+8:2-[3x(7-6)]} = x