<PAGE> PAGE 1
000 B000000 12/31/94
000 C000000 811858
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 DREYFUS 100% U.S. TREASURY SHORT TERM FUND
001 B000000 811-5077
001 C000000 2129226820
002 A000000 200 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10166
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
011 A000001 PREMIER MUTUAL FUND SERVICES, INC.
011 B000001 8-47312
011 C010001 BOSTON
011 C020001 MA
011 C030001 02109
013 A000001 ERNST & YOUNG LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10019
015 A000001 THE BANK OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 153
019 C000000 DREYFUSFAM
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
<PAGE> PAGE 2
021 000000 0
022 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000001 13-5674085
022 C000001 520486
022 D000001 542450
022 A000002 G.X. CLARKE & CO.
022 B000002 13-2969143
022 C000002 265445
022 D000002 179254
022 A000003 KIDDER, PEABODY & CO. INCORPORATED
022 B000003 13-5650440
022 C000003 104083
022 D000003 91167
022 A000004 ARBOR TRADING GROUP, INC.
022 B000004 36-3540782
022 C000004 63393
022 D000004 67320
022 A000005 SALOMON BROTHERS INC.
022 B000005 13-3082694
022 C000005 9730
022 D000005 86805
022 A000006 GOLDMAN, SACHS & CO.
022 B000006 13-5108880
022 C000006 30409
022 D000006 48583
022 A000007 UBS SECURITIES
022 B000007 13-2932996
022 C000007 57211
022 D000007 20848
022 A000008 DAIWA SECURITIES AMERICA INC.
022 B000008 13-5680329
022 C000008 50060
022 D000008 4971
022 A000009 THE FIRST BOSTON CORPORATION
022 B000009 13-5659485
022 C000009 20443
022 D000009 14957
022 A000010 LEHMAN BROTHERS INC.
022 B000010 13-2518466
022 C000010 9599
022 D000010 10383
023 C000000 1150765
023 D000000 1076477
024 000000 N
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 N
026 E000000 N
026 F000000 N
026 G010000 N
<PAGE> PAGE 3
026 G020000 N
026 H000000 N
027 000000 Y
028 A010000 9334
028 A020000 857
028 A030000 0
028 A040000 7862
028 B010000 8770
028 B020000 928
028 B030000 0
028 B040000 6493
028 C010000 7836
028 C020000 834
028 C030000 0
028 C040000 9808
028 D010000 7371
028 D020000 789
028 D030000 0
028 D040000 12939
028 E010000 7739
028 E020000 748
028 E030000 0
028 E040000 11730
028 F010000 9913
028 F020000 745
028 F030000 0
028 F040000 14535
028 G010000 50963
028 G020000 4901
028 G030000 0
028 G040000 63367
028 H000000 0
029 000000 N
030 A000000 0
030 B000000 0.00
030 C000000 0.00
055 A000000 Y
055 B000000 N
056 000000 N
057 000000 N
062 A000000 Y
062 B000000 23.9
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
<PAGE> PAGE 4
062 L000000 0.0
062 M000000 83.5
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 1.6
064 A000000 N
064 B000000 N
070 A010000 N
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 N
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 816954
071 B000000 860107
071 C000000 163683
071 D000000 499
<PAGE> PAGE 5
072 A000000 12
072 B000000 14692
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 1107
072 G000000 0
072 H000000 0
072 I000000 438
072 J000000 23
072 K000000 0
072 L000000 19
072 M000000 27
072 N000000 41
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 40
072 S000000 16
072 T000000 0
072 U000000 0
072 V000000 9
072 W000000 6
072 X000000 1727
072 Y000000 1086
072 Z000000 14051
072AA000000 390
072BB000000 14016
072CC010000 0
072CC020000 1006
072DD010000 14018
072DD020000 0
072EE000000 0
073 A010000 1.1480
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 723
074 B000000 0
074 C000000 41232
074 D000000 144172
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 2950
074 M000000 2
074 N000000 189079
<PAGE> PAGE 6
074 O000000 14981
074 P000000 15
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 1527
074 S000000 0
074 T000000 172556
074 U010000 11856
074 U020000 0
074 V010000 14.55
074 V020000 0.00
074 W000000 0.0000
074 X000000 6802
074 Y000000 0
075 A000000 0
075 B000000 184577
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 C000000 Y
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
077 Q010000 Y
080 A000000 NATIONAL UNION FIRE INS. CO. OF PITTSBURG, PA
080 B000000 VIGILANT INSURANCE COMPANY
080 C000000 105000
081 A000000 Y
081 B000000 146
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
SIGNATURE JOHN J. PYBURN
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000811858
<NAME> DREYFUS 100% U.S. TREASURY SHORT-TERM FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1994
<PERIOD-END> DEC-31-1994
<INVESTMENTS-AT-COST> 190,270
<INVESTMENTS-AT-VALUE> 185,404
<RECEIVABLES> 2,950
<ASSETS-OTHER> 725
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 189,079
<PAYABLE-FOR-SECURITIES> 14,981
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,542
<TOTAL-LIABILITIES> 16,523
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 190,601
<SHARES-COMMON-STOCK> 11,856
<SHARES-COMMON-PRIOR> 11,959
<ACCUMULATED-NII-CURRENT> 33
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (13,211)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (4,867)
<NET-ASSETS> 172,556
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 14,692
<OTHER-INCOME> 0
<EXPENSES-NET> 641
<NET-INVESTMENT-INCOME> 14,051
<REALIZED-GAINS-CURRENT> (13,626)
<APPREC-INCREASE-CURRENT> (1,006)
<NET-CHANGE-FROM-OPS> (581)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (14,018)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9,091
<NUMBER-OF-SHARES-REDEEMED> (9,882)
<SHARES-REINVESTED> 687
<NET-CHANGE-IN-ASSETS> (15,744)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 414
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,107
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,727
<AVERAGE-NET-ASSETS> 184,577
<PER-SHARE-NAV-BEGIN> 15.75
<PER-SHARE-NII> 1.15
<PER-SHARE-GAIN-APPREC> (1.20)
<PER-SHARE-DIVIDEND> (1.15)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.55
<EXPENSE-RATIO> .004
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>