Question

1)No caderno efetue a) |5|+|-4| b) |1|-|-3|+|7| c) |10|•|2|-|8| d) |1•(-2)+5|•|3|

Answer 1

a)
• 5 + (-4) =
• 5 - 4 =
• 1

b)
• 1 - (-3) + 7 =
• 1 + 3 + 7 =
• 4 + 7 =
• 11

c)
• 10 . 2 - 8 =
• 20 - 8 =
• 12

d)
• 1 . (-2) + 5 . 3 =
• - 2 + 5 . 3 =
• - 2 + 15 =
• + 13