Răspuns:
a)
abc = a x 100 + b x 10 + c x 1 =
a x 10² + b x 10¹ + c x 10⁰
b)
ab = a x 10 + b x 1 =
a x 10¹ + b x 10⁰
c)
abcd = a x 1000 + b x 100 + c x 10 + d x 1 =
a x 10³ + b x 10² + c x 10¹ + d x 10⁰
d)
aab = a x 100 + a x 10 + b x 1 =
a x 10² + a x 10¹ + b x 10⁰
e)
aaaa = a x 1000 + a x 100 + a x 10 + a x 1 =
a x 10³ + a x 10² + a x 10¹ + a x 10⁰
f )
a0b = a x 100 + 0 x 10 + b x 1 =
a x 10² + 0 x 10¹ + b x 10⁰
g)
ab0cd = a x 10000 + b x 1000 + 0 x 100 + c x 10 + d x 1 =
a x 10⁴ + b x 10³ + 0 x 10² + c x 10¹ + d x 10⁰
h)
aab0c0 =
a x 100000 + a x 10000 + b x 1000 + 0 x 100 + c x 10 + 0 x 1 =
a x 10⁵ + a x 10⁴ + b x 10³ + 0 x 10² + c x 10¹ + 0 x 10⁰