<PAGE> PAGE 1
000 B000000 12/31/97
000 C000000 0000872604
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 THE BLACKROCK 1998 TERM TRUST INC.
001 B000000 811-6284
001 C000000 9733677530
002 A000000 GATEWAY CENTER 3, 100 MULBERRY STREET
002 B000000 NEWARK
002 C000000 NJ
002 D010000 07102
002 D020000 4077
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 BLACKROCK FINANCIAL MANAGEMENT, INC.
008 B000001 A
008 C000001 801-32183
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10154
010 A000001 PRUDENTIAL INVESTMENTS FUND MANAGEMENT LLC
010 B000001 811-31104
010 C010001 NEWARK
010 C020001 NJ
010 C030001 07102
010 C040001 4077
012 A000001 STATE STREET BANK & TRUST COMPANY
012 B000001 84-000000
012 C010001 NORTH QUINCY
012 C020001 MA
012 C030001 02171
013 A000001 DELOITTE & TOUCHE LLP
<PAGE> PAGE 2
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10281
013 B040001 1434
014 A000001 DELETE
015 A000001 STATE STREET BANK & TRUST COMPANY
015 B000001 C
015 C010001 NORTH QUINCY
015 C020001 MA
015 C030001 02171
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 28
019 C000000 BLACKROCK.
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 SALOMON BROTHERS, INC.
022 B000001 13-3082694
022 C000001 244684
022 D000001 339
022 A000002 PAINEWEBBER, INC.
022 B000002 13-2638166
022 C000002 235321
022 D000002 0
022 A000003 LANSTON (AUBREY G) & CO.
022 B000003 13-5552129
022 C000003 214079
022 D000003 0
022 A000004 STATE STREET BANK & TRUST CO.
022 B000004 04-1867445
022 C000004 170955
022 D000004 0
022 A000005 PRUDENTIAL SECURITIES, INC.
022 B000005 22-2347336
022 C000005 157262
022 D000005 0
022 A000006 NIKKO SECURITIES CO. INTERNATIONAL, INC.
022 B000006 94-1302123
022 C000006 65052
022 D000006 10411
022 A000007 LEHMAN BROTHERS, INC.
<PAGE> PAGE 3
022 B000007 13-2518466
022 C000007 28662
022 D000007 13974
022 A000008 DEUTSCHE MORGAN GRENFELL/C.J. LAWRENCE, INC.
022 B000008 13-2730828
022 C000008 0
022 D000008 28998
022 A000009 SMITH BARNEY, INC.
022 B000009 13-1912900
022 C000009 24390
022 D000009 0
022 A000010 SANWA SECURITIES (USA) CO., L.P.
022 B000010 13-3046258
022 C000010 13475
022 D000010 148
023 C000000 1172688
023 D000000 84726
024 000000 Y
025 A000001 SALOMON BROTHERS, INC.
025 B000001 13-3082694
025 C000001 D
025 D000001 25117
025 A000002 PAINEWEBBER, INC.
025 B000002 13-2638166
025 C000002 D
025 D000002 13920
025 A000003 LEHMAN BROTHERS, INC.
025 B000003 13-2518466
025 C000003 D
025 D000003 9933
025 A000004 DELETE
025 D000004 0
025 A000005 DELETE
025 D000005 0
025 A000006 DELETE
025 D000006 0
025 A000007 DELETE
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
<PAGE> PAGE 4
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.400
<PAGE> PAGE 5
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 N
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
<PAGE> PAGE 6
062 A000000 Y
062 B000000 0.0
062 C000000 1.7
062 D000000 0.0
062 E000000 0.0
062 F000000 2.2
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 7.2
062 N000000 3.7
062 O000000 0.0
062 P000000 59.1
062 Q000000 24.3
062 R000000 0.0
063 A000000 0
063 B000000 0.7
064 A000000 N
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
<PAGE> PAGE 7
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 Y
070 O010000 Y
070 O020000 Y
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 Y
071 A000000 213413
071 B000000 433719
071 C000000 714993
071 D000000 30
072 A000000 12
072 B000000 37310
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 2326
072 G000000 465
072 H000000 0
072 I000000 48
072 J000000 135
072 K000000 0
072 L000000 330
072 M000000 84
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 65
072 S000000 10
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 207
072 X000000 3670
072 Y000000 0
072 Z000000 33640
072AA000000 3532
072BB000000 5788
072CC010000 0
072CC020000 1190
072DD010000 26888
072DD020000 0
072EE000000 0
073 A010000 0.4584
073 A020000 0.0000
<PAGE> PAGE 8
073 B000000 0.0000
073 C000000 0.0000
074 A000000 975
074 B000000 0
074 C000000 22998
074 D000000 551582
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 8562
074 M000000 1013
074 N000000 585130
074 O000000 0
074 P000000 238
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 278
074 S000000 0
074 T000000 584614
074 U010000 58661
074 U020000 0
074 V010000 9.97
074 V020000 0.00
074 W000000 0.0000
074 X000000 2062
074 Y000000 0
075 A000000 0
075 B000000 580776
076 000000 9.75
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
<PAGE> PAGE 9
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 Y
079 010001 811-077210
079 020001 BBT SUBSIDIARY, INC.
080 A000000 VIGILANT INSURANCE COMPANY
080 C000000 20200
081 A000000 Y
081 B000000 28
082 A000000 Y
082 B000000 25
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 092515105
087 A030000 BBT
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE HENRY GABBAY
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000872604
<NAME> THE BLACKROCK 1998 TERM TRUST INC.
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 576,783,548
<INVESTMENTS-AT-VALUE> 574,580,462
<RECEIVABLES> 8,562,185
<ASSETS-OTHER> 1,987,448
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 585,130,095
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 516,152
<TOTAL-LIABILITIES> 516,152
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 552,914,999
<SHARES-COMMON-STOCK> 58,660,527
<SHARES-COMMON-PRIOR> 58,660,527
<ACCUMULATED-NII-CURRENT> 32,963,566
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (74,342)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1,190,280)
<NET-ASSETS> 584,613,943
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 37,309,847
<OTHER-INCOME> 0
<EXPENSES-NET> 3,669,773
<NET-INVESTMENT-INCOME> 33,640,074
<REALIZED-GAINS-CURRENT> (2,255,987)
<APPREC-INCREASE-CURRENT> 1,976,403
<NET-CHANGE-FROM-OPS> 33,360,490
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (26,887,924)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 6,472,566
<ACCUMULATED-NII-PRIOR> 26,211,416
<ACCUMULATED-GAINS-PRIOR> 2,181,645
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,325,634
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3,669,773
<AVERAGE-NET-ASSETS> 580,776,000
<PER-SHARE-NAV-BEGIN> 9.86
<PER-SHARE-NII> 0.58
<PER-SHARE-GAIN-APPREC> (0.01)
<PER-SHARE-DIVIDEND> (0.46)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 9.97
<EXPENSE-RATIO> 0.63
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.00
</TABLE>
- 2 -
INDEPENDENT AUDITORS' REPORT
To the Shareholders and Board of Directors of
The BlackRock 1998 Term Trust, Inc.:
In planning and performing our audit of the
financial statements of The BlackRock 1998 Term
Trust, Inc. (the "Trust") for the year ended
December 31, 1997 (on which we have issued our
report dated February 13, 1998), we considered
its internal control, including control
activities for safeguarding securities, in order
to determine our auditing procedures for the
purpose of expressing our opinion on the
financial statements and to comply with the
requirements of Form N-SAR, and not to provide
assurance on the Trust's internal control.
The management of the Trust is responsible for
establishing and maintaining internal control.
In fulfilling this responsibility, estimates and
judgments by management are required to assess
the expected benefits and related costs of
controls. Generally, controls that are relevant
to an audit pertain to the entity's objective of
preparing financial statements for external
purposes that are fairly presented in conformity
with generally accepted accounting principles.
Those controls include the safeguarding of
assets against unauthorized acquisition, use or
disposition.
Because of inherent limitations in any internal
control, errors or fraud may occur and not be
detected. Also, projection of any evaluation of
internal control to future periods is subject to
the risk that it may become inadequate because
of changes in conditions or that the
effectiveness of the design and operation may
deteriorate.
Our consideration of the Trust's internal
control would not necessarily disclose all
matters in internal control that might be
material weaknesses under standards established
by the American Institute of Certified Public
Accountants. A material weakness is a condition
in which the design or operation of one or more
of the internal control components does not
reduce to a relatively low level the risk that
errors or fraud in amounts that would be
material in relation to the financial statements
being audited may occur and not be detected
within a timely period by employees in the
normal course of performing their assigned
functions. However, we noted no matters
involving the Trust's internal control and its
operation, including controls for safeguarding
securities, that we consider to be material
weaknesses as defined above as of December 31,
1997.
This report is intended solely for the
information and use of the Trust's management
and Board of Directors, and the Securities and
Exchange Commission.
Boston, Massachusetts
February 13, 1998
