<PAGE> PAGE 1
000 A000000 08/31/2000
000 C000000 0000932101
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 Y
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 PUTNAM INVESTMENT FUNDS
001 B000000 811-7237
001 C000000 6172921562
002 A000000 ONE POST OFFICE SQUARE
002 B000000 BOSTON
002 C000000 MA
002 D010000 02109
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 1
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
007 C011100 11
007 C011200 12
007 C011300 13
007 C021300 PUTNAM SMALL CAP VALUE
007 C031300 N
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
007 C012100 21
007 C012200 22
007 C012300 23
007 C012400 24
007 C012500 25
007 C012600 26
007 C012700 27
<PAGE> PAGE 2
007 C012800 28
007 C012900 29
007 C013000 30
007 C013100 31
007 C013200 32
007 C013300 33
007 C013400 34
007 C013500 35
007 C013600 36
007 C013700 37
007 C013800 38
007 C013900 39
007 C014000 40
007 C014100 41
007 C014200 42
007 C014300 43
007 C014400 44
007 C014500 45
007 C014600 46
007 C014700 47
007 C014800 48
007 C014900 49
007 C015000 50
007 C015100 51
007 C015200 52
007 C015300 53
007 C015400 54
007 C015500 55
007 C015600 56
007 C015700 57
007 C015800 58
007 C015900 59
007 C016000 60
007 C016100 61
007 C016200 62
007 C016300 63
007 C016400 64
007 C016500 65
007 C016600 66
007 C016700 67
007 C016800 68
007 C016900 69
007 C017000 70
007 C017100 71
007 C017200 72
007 C017300 73
007 C017400 74
007 C017500 75
007 C017600 76
007 C017700 77
007 C017800 78
<PAGE> PAGE 3
007 C017900 79
007 C018000 80
007 C018100 81
007 C018200 82
007 C018300 83
007 C018400 84
007 C018500 85
007 C018600 86
007 C018700 87
007 C018800 88
007 C018900 89
007 C019000 90
008 A00AA01 PUTNAM INVESTMENT MANAGEMENT, INC.
008 B00AA01 A
008 C00AA01 801-7974
008 D01AA01 BOSTON
008 D02AA01 MA
008 D03AA01 02109
011 A00AA01 PUTNAM REATAIL MANAGEMENT, INC.
011 B00AA01 8-5088
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02109
012 A00AA01 PUTNAM INVESTOR SERVICES
012 B00AA01 84-401299
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02109
013 A00AA01 KPMG LLP
013 B01AA01 BOSTON
013 B02AA01 MA
013 B03AA01 02110
015 A00AA01 PUTNAM FIDUCIARY TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02109
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 97
019 C00AA00 PUTNAMFUND
020 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
020 B000001 13-5674085
020 C000001 44
020 A000002 SALOMON SMITH BARNEY
020 C000002 26
020 A000003 INVESTMENT TECHNOLOGY
020 C000003 15
020 A000004 STANDARD & POOR'S SECURITIES, INC.
020 B000004 22-2294520
<PAGE> PAGE 4
020 C000004 13
020 A000005 BRIDGE TRADING CO.
020 B000005 43-1034850
020 C000005 12
020 A000006 EDWARDS (A.G.) & SONS INC.
020 B000006 43-0895477
020 C000006 12
020 A000007 BAIRD (ROBERT W.) & CO. INC.
020 B000007 39-6037917
020 C000007 11
020 A000008 CREDIT SUISSE FIRST BOSTON
020 C000008 9
020 A000009 RAYMOND JAMES & ASSOCIATES INC.
020 B000009 59-1237041
020 C000009 9
020 A000010 CANTOR, FITZGERALD & CO., INC.
020 B000010 95-1786286
020 C000010 6
021 000000 262
022 A000001 WARBURG DILLON READ
022 C000001 302812
022 D000001 0
022 A000002 MORGAN (J.P.) SECURITIES INC.
022 B000002 13-3224016
022 C000002 92649
022 D000002 0
022 A000003 CREDIT SUISSE FIRST BOSTON
022 C000003 85401
022 D000003 1582
022 A000004 MORGAN STANLEY INC.
022 B000004 13-2655998
022 C000004 64469
022 D000004 309
022 A000005 SALOMON SMITH BARNEY
022 C000005 47466
022 D000005 415
022 A000006 MERRILL LYNCH, PIERCE, FENNER & SMITH
022 B000006 13-5674085
022 C000006 22613
022 D000006 1975
022 A000007 LEHMAN BROTHERS
022 B000007 13-2518466
022 C000007 23171
022 D000007 850
022 A000008 GOLDMAN SACHS & CO
022 B000008 13-5108880
022 C000008 23260
022 D000008 32
022 A000009 HERZOG, HEINE, GEDULD INC.
022 B000009 13-1955436
022 C000009 8800
<PAGE> PAGE 5
022 D000009 235
022 A000010 JEFFERIES & CO
022 B000010 95-2622900
022 C000010 6040
022 D000010 274
023 C000000 702555
023 D000000 11841
024 00AA00 N
025 D00AA01 0
025 D00AA02 0
025 D00AA03 0
025 D00AA04 0
025 D00AA05 0
025 D00AA06 0
025 D00AA07 0
025 D00AA08 0
026 A000000 Y
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 Y
026 G020000 Y
026 H000000 N
027 000000 Y
028 A01AA00 39237
028 A02AA00 0
028 A03AA00 0
028 A04AA00 7111
028 B01AA00 16884
028 B02AA00 0
028 B03AA00 0
028 B04AA00 9091
028 C01AA00 10724
028 C02AA00 0
028 C03AA00 0
028 C04AA00 6665
028 D01AA00 15812
028 D02AA00 0
028 D03AA00 0
028 D04AA00 4141
028 E01AA00 22583
028 E02AA00 0
028 E03AA00 0
028 E04AA00 4119
028 F01AA00 27394
028 F02AA00 0
028 F03AA00 0
028 F04AA00 9114
028 G01AA00 132634
<PAGE> PAGE 6
028 G02AA00 0
028 G03AA00 0
028 G04AA00 40241
028 H00AA00 132634
066 A00AA00 Y
066 C00AA00 Y
077 A000000 N
078 000000 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
086 A01AA00 0
086 A02AA00 0
086 B01AA00 0
086 B02AA00 0
086 C01AA00 0
086 C02AA00 0
086 D01AA00 0
086 D02AA00 0
086 E01AA00 0
086 E02AA00 0
086 F01AA00 0
086 F02AA00 0
030 A000100 0
030 B000100 0.00
030 C000100 0.00
031 A000100 0
031 B000100 0
032 000100 0
033 000100 0
035 000100 0
036 B000100 0
029 001300 Y
030 A001300 675
030 B001300 5.75
030 C001300 0.00
031 A001300 112
031 B001300 0
032 001300 563
033 001300 0
034 001300 Y
035 001300 69
<PAGE> PAGE 7
036 A001300 Y
036 B001300 0
037 001300 N
038 001300 0
039 001300 N
040 001300 Y
041 001300 Y
042 A001300 0
042 B001300 0
042 C001300 100
042 D001300 0
042 E001300 0
042 F001300 0
042 G001300 0
042 H001300 0
043 001300 603
044 001300 0
045 001300 Y
046 001300 N
047 001300 Y
048 001300 0.000
048 A011300 500000
048 A021300 0.800
048 B011300 500000
048 B021300 0.700
048 C011300 500000
048 C021300 0.650
048 D011300 5000000
048 D021300 0.600
048 E011300 5000000
048 E021300 0.575
048 F011300 5000000
048 F021300 0.555
048 G011300 0
048 G021300 0.000
048 H011300 0
048 H021300 0.000
048 I011300 0
048 I021300 0.000
048 J011300 0
048 J021300 0.000
048 K011300 21500000
048 K021300 0.530
049 001300 N
050 001300 N
051 001300 N
052 001300 N
053 A001300 N
054 A001300 Y
054 B001300 Y
054 C001300 Y
<PAGE> PAGE 8
054 D001300 N
054 E001300 N
054 F001300 N
054 G001300 N
054 H001300 N
054 I001300 N
054 J001300 Y
054 K001300 N
054 L001300 Y
054 M001300 Y
054 N001300 N
054 O001300 Y
055 A001300 N
055 B001300 N
056 001300 N
057 001300 N
058 A001300 N
059 001300 Y
060 A001300 Y
060 B001300 Y
061 001300 500
062 A001300 N
062 B001300 0.0
062 C001300 0.0
062 D001300 0.0
062 E001300 0.0
062 F001300 0.0
062 G001300 0.0
062 H001300 0.0
062 I001300 0.0
062 J001300 0.0
062 K001300 0.0
062 L001300 0.0
062 M001300 0.0
062 N001300 0.0
062 O001300 0.0
062 P001300 0.0
062 Q001300 0.0
062 R001300 0.0
063 A001300 0
063 B001300 0.0
070 A011300 Y
070 A021300 Y
070 B011300 Y
070 B021300 N
070 C011300 Y
070 C021300 N
070 D011300 Y
070 D021300 N
070 E011300 Y
070 E021300 N
<PAGE> PAGE 9
070 F011300 Y
070 F021300 N
070 G011300 Y
070 G021300 N
070 H011300 Y
070 H021300 N
070 I011300 Y
070 I021300 N
070 J011300 Y
070 J021300 N
070 K011300 N
070 K021300 N
070 L011300 Y
070 L021300 N
070 M011300 Y
070 M021300 N
070 N011300 Y
070 N021300 N
070 O011300 Y
070 O021300 N
070 P011300 N
070 P021300 N
070 Q011300 N
070 Q021300 N
070 R011300 N
070 R021300 N
071 A001300 118493
071 B001300 33208
071 C001300 193554
071 D001300 17
072 A001300 6
072 B001300 160
072 C001300 1367
072 D001300 0
072 E001300 0
072 F001300 839
072 G001300 3
072 H001300 0
072 I001300 117
072 J001300 43
072 K001300 0
072 L001300 0
072 M001300 7
072 N001300 0
072 O001300 0
072 P001300 0
072 Q001300 0
072 R001300 0
072 S001300 0
072 T001300 603
072 U001300 0
<PAGE> PAGE 10
072 V001300 0
072 W001300 96
072 X001300 1708
072 Y001300 0
072 Z001300 -181
072AA001300 2163
072BB001300 0
072CC011300 18442
072CC021300 0
072DD011300 0
072DD021300 0
072EE001300 0
073 A011300 0.0000
073 A021300 0.0000
073 B001300 0.0000
073 C001300 0.0000
074 A001300 136
074 B001300 8168
074 C001300 0
074 D001300 0
074 E001300 0
074 F001300 255350
074 G001300 0
074 H001300 0
074 I001300 0
074 J001300 1779
074 K001300 0
074 L001300 1700
074 M001300 0
074 N001300 267133
074 O001300 2378
074 P001300 685
074 Q001300 0
074 R011300 0
074 R021300 0
074 R031300 0
074 R041300 235
074 S001300 0
074 T001300 263835
074 U011300 13518
074 U021300 8856
074 V011300 11.00
074 V021300 10.90
074 W001300 0.0000
074 X001300 20765
074 Y001300 0
075 A001300 0
075 B001300 208261
076 001300 0.00
080 A001300 FEDERAL INSURANCE COMPANY
080 B001300 NATIONAL UNION FIRE INSURANCE COMPANY
<PAGE> PAGE 11
080 C001300 50000
081 A001300 Y
081 B001300 96
082 A001300 N
082 B001300 0
083 A001300 N
083 B001300 0
084 A001300 N
084 B001300 0
085 A001300 Y
085 B001300 N
SIGNATURE PAUL BUCUVALAS
TITLE MANAGING DIRECTOR
