#### Answer

(a) Hundred: $1, 500$
(b) Ten: $1, 450$
(c) Unit: $1, 452$
(d) Tenth: $1, 451.5$
(e) Hundredths: $1, 451.53$
(f) Thousandths: $1, 451.525$

#### Work Step by Step

(a) Hundred: $1, 500$
Explanation:
The hundreds digit $4$ is followed by a $5$ so round the hundreds digit up to $5$ then replace the tens and units digit with $0$ and omit the decimals,
(b) Ten: $1, 450$
Explanation:
The tens digit $5$ is followed by a $1$ so retain the tens digit $5$ then replace the units digit with $0$ and omit the decimals,
(c) Unit: $1, 452$
Explanation:
The units digit $1$ is followed by a $5$ so round up the units digit to $2$ then omit the decimals,
(d) Tenth: $1, 451.5$
Explanation:
The tenths digit $5$ is followed by a $2$ so retain the tenths digit $5$ then omit the succeeding decimals,
(e) Hundredths: $1, 451.53$
Explanation:
The hundredths digit $2$ is followed by a $5$ so round up the hundredths digit to $3$ then omit the succeeding decimals,
(f) Thousandths: $1, 451.525$
Explanation:
The thousandths digit $5$ is followed by a $4$ so retain the hundredths digit, $5$, then omit the succeeding decimals.