(1) −12 + 3 = (2) −15 + 7 =
(3) −7 + 1 = (4) −12 + 5 =
(5) −4 + 2 = (6) −11 + 3 =
(7) −68 + 30 = (8) −85 + 27 =
(9) −170 + 93 = (10) −42 + 30 =
(11) −117 + 43 = (12) −139 + 55 =
(13) −761 + 459 = (14) −1138 + 656 =
(15) −1545 + 799 = (16) −684 + 601 =
(1) −12 + 3 =
− 9
(2) −15 + 7 =− 8
(3) −7 + 1 =
− 6
(4) −12 + 5 =− 7
(5) −4 + 2 =
− 2
(6) −11 + 3 =− 8
(7) −68 + 30 =
− 38
(8) −85 + 27 =− 58
(9) −170 + 93 =
− 77
(10) −42 + 30 =− 12
(11) −117 + 43 =
− 74
(12) −139 + 55 =− 84
(13) −761 + 459 =
− 302
(14) −1138 + 656 =− 482
(15) −1545 + 799 =
− 746
(16) −684 + 601 =− 83
(1) −10 + 3 = (2) −3 + 2 =
(3) −9 + 4 = (4) −10 + 8 =
(5) −5 + 3 = (6) −8 + 5 =
(7) −48 + 25 = (8) −49 + 34 =
(9) −124 + 31 = (10) −149 + 94 =
(11) −74 + 47 = (12) −83 + 20 =
(13) −148 + 95 = (14) −478 + 454 =
(15) −338 + 278 = (16) −479 + 79 =
(1) −10 + 3 =
− 7
(2) −3 + 2 =− 1
(3) −9 + 4 =
− 5
(4) −10 + 8 =− 2
(5) −5 + 3 =
− 2
(6) −8 + 5 =− 3
(7) −48 + 25 =
− 23
(8) −49 + 34 =− 15
(9) −124 + 31 =
− 93
(10) −149 + 94 =− 55
(11) −74 + 47 =
− 27
(12) −83 + 20 =− 63
(13) −148 + 95 =
− 53
(14) −478 + 454 =− 24
(15) −338 + 278 =
− 60
(16) −479 + 79 =− 400
(1) −6 + 1 = (2) −9 + 3 =
(3) −17 + 8 = (4) −5 + 2 =
(5) −7 + 4 = (6) −14 + 9 =
(7) −78 + 24 = (8) −112 + 67 =
(9) −106 + 65 = (10) −96 + 94 =
(11) −163 + 67 = (12) −94 + 85 =
(13) −340 + 155 = (14) −577 + 373 =
(15) −1280 + 994 = (16) −367 + 79 =
(1) −6 + 1 =
− 5
(2) −9 + 3 =− 6
(3) −17 + 8 =
− 9
(4) −5 + 2 =− 3
(5) −7 + 4 =
− 3
(6) −14 + 9 =− 5
(7) −78 + 24 =
− 54
(8) −112 + 67 =− 45
(9) −106 + 65 =
− 41
(10) −96 + 94 =− 2
(11) −163 + 67 =
− 96
(12) −94 + 85 =− 9
(13) −340 + 155 =
− 185
(14) −577 + 373 =− 204
(15) −1280 + 994 =
− 286
(16) −367 + 79 =− 288
(1) −11 + 2 = (2) −5 + 3 =
(3) −10 + 7 = (4) −17 + 9 =
(5) −13 + 7 = (6) −10 + 8 =
(7) −109 + 52 = (8) −127 + 86 =
(9) −62 + 12 = (10) −155 + 82 =
(11) −150 + 58 = (12) −71 + 32 =
(13) −1149 + 531 = (14) −1730 + 753 =
(15) −464 + 109 = (16) −1632 + 691 =
(1) −11 + 2 =
− 9
(2) −5 + 3 =− 2
(3) −10 + 7 =
− 3
(4) −17 + 9 =− 8
(5) −13 + 7 =
− 6
(6) −10 + 8 =− 2
(7) −109 + 52 =
− 57
(8) −127 + 86 =− 41
(9) −62 + 12 =
− 50
(10) −155 + 82 =− 73
(11) −150 + 58 =
− 92
(12) −71 + 32 =− 39
(13) −1149 + 531 =
− 618
(14) −1730 + 753 =− 977
(15) −464 + 109 =
− 355
(16) −1632 + 691 =− 941
(1) −15 + 9 = (2) −11 + 5 =
(3) −10 + 9 = (4) −7 + 6 =
(5) −16 + 7 = (6) −6 + 2 =
(7) −114 + 42 = (8) −25 + 12 =
(9) −96 + 40 = (10) −113 + 93 =
(11) −72 + 52 = (12) −80 + 63 =
(13) −541 + 230 = (14) −1348 + 545 =
(15) −948 + 797 = (16) −1131 + 838 =
(1) −15 + 9 =
− 6
(2) −11 + 5 =− 6
(3) −10 + 9 =
− 1
(4) −7 + 6 =− 1
(5) −16 + 7 =
− 9
(6) −6 + 2 =− 4
(7) −114 + 42 =
− 72
(8) −25 + 12 =− 13
(9) −96 + 40 =
− 56
(10) −113 + 93 =− 20
(11) −72 + 52 =
− 20
(12) −80 + 63 =− 17
(13) −541 + 230 =
− 311
(14) −1348 + 545 =− 803
(15) −948 + 797 =
