Expressões numéricas:
a)3.[500 - 9 . (70 - 4 . 10 + 20)]
b)[4 + 35 : 7 + 2 . (15 - 9. 1)]
c)100 + (60 - 8 . 5) : (4 . 3 + 8)
Soluções para a tarefa
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A)
3.[500-9.(70-4.10+20)]
3.[500-9.(70-40+20)]
3.[500-9.50]
3.[500-450]
3.50
=150
B)
[4+35:7+2.(15-9.1)]
[4+5+2.(15-9)]
[4+5+2.6]
4+5+12
=21
C)
100+(60-8.5) : (4.3+8)
100+(60-40) : (12+8)
100+20 : 20
100+1
=101
3.[500-9.(70-4.10+20)]
3.[500-9.(70-40+20)]
3.[500-9.50]
3.[500-450]
3.50
=150
B)
[4+35:7+2.(15-9.1)]
[4+5+2.(15-9)]
[4+5+2.6]
4+5+12
=21
C)
100+(60-8.5) : (4.3+8)
100+(60-40) : (12+8)
100+20 : 20
100+1
=101
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