Question

Calcule o valor das expressões:
a) 16-7-2+ 9-10 = 7
b) 700 + 3 - 549 + 8 = 156
c) 999 - 99 + 109 - 900 =1.09
d) 10 + 7 x 4-5 =
e) 42: 7 - 4 + 5 =​

Answer 1

Resposta:

a) 16-7-2+ 9-10 = 6

16-7 = 9  9-2 = 7  7+9 = 16  16-10 = 6

b) 700 + 3 - 549 + 8 = 162

700-549 = 151   151+3 = 154   154+8 = 162

c) 999 - 99 + 109 - 900 = 109

999-99 = 900  900-900 = 0 0+109 = 109