Răspuns:
a)
3 x 10³ + 2 x 10 + 5 =
3 x 1000 + 2 x 10 + 5 =
3000 + 20 + 5 =
3025
b)
7 x 10⁴ + 5 x 10³ + 3 x 10 =
7 x 10000 + 5 x 1000 + 3 x 10 =
70000 + 5000 + 30 =
75030
c)
1 x 10⁴ + 7 x 10² + 8 =
1 x 10000 + 7 x 100 + 8 =
10000 + 700 + 8 =
10708
d)
2 x 10⁷ + 4 x 10⁵ + 6 x 10³ + 5 =
2 x 10000000 + 4 x 100000 + 6 x 1000 + 5 =
20000000 + 400000 + 6000 + 5 =
20406005
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