- 耗时： 0分0秒
- 题数：
- 得分：
- 560 ÷ 20 - 10 (560 ÷ 20) + 10 <
- 434 - 86 + 73 (434 + 86) - 73 <
- 61 × 9 - 56 (61 × 56) - 9 <
- 112 - 51 + 20 (112 + 51) - 20 <
- 93 × 3 + 14 (93 × 14) + 3 <
- 540 ÷ 20 + 15 (540 ÷ 20) - 15 >
- 65 × 5 + 47 (65 × 47) + 5 <
- 650 - 97 + 84 (650 + 97) - 84 <
- 770 + 10 - 79 770 - 10 + 79 <
- 937 + 10 - 94 937 - 10 + 94 <
- 75 × 8 + 49 (75 × 49) + 8 <
- 450 ÷ 15 - 5 (450 ÷ 15) + 5 <
- 840 ÷ 14 - 35 (840 ÷ 14) + 35 <
- 25 × 8 + 66 (25 × 66) + 8 <
- 94 × 3 - 38 (94 × 38) - 3 <
- 630 ÷ 14 + 15 (630 ÷ 14) - 15 >
- 61 × 6 - 87 (61 × 87) - 6 <
- 64 × 2 + 46 (64 × 46) + 2 <
- 18 × 8 - 25 (18 × 25) - 8 <
- 80 × 3 - 22 (80 × 22) - 3 <
- 225 ÷ 15 - 5 (225 ÷ 15) + 5 <
- 87 × 5 - 40 (87 × 40) - 5 <
- 35 × 7 - 37 (35 × 37) - 7 <
- 795 ÷ 15 + 15 (795 ÷ 15) - 15 >
- 44 × 2 + 15 (44 × 15) + 2 <
- 897 - 34 + 94 (897 + 34) - 94 >
- 838 - 15 + 12 (838 + 15) - 12 <
- 391 ÷ 17 + 17 (391 ÷ 17) - 17 >
- 51 × 8 + 53 (51 × 53) + 8 <
- 103 - 35 + 40 (103 + 35) - 40 >
- 331 + 10 - 47 331 - 10 + 47 <
- 49 × 7 + 44 (49 × 44) + 7 <
- 992 ÷ 31 + 32 (992 ÷ 31) - 32 >
- 245 + 10 - 79 245 - 10 + 79 <
- 58 + 10 - 49 58 - 10 + 49 <
- 86 × 6 + 85 (86 × 85) + 6 <
- 672 ÷ 14 - 21 (672 ÷ 14) + 21 <
- 536 + 10 - 76 536 - 10 + 76 <
- 10 × 4 - 37 (10 × 37) - 4 <
- 44 × 7 + 39 (44 × 39) + 7 <
- 265 + 10 - 45 265 - 10 + 45 <
- 95 × 6 - 93 (95 × 93) - 6 <
- 416 ÷ 16 + 13 (416 ÷ 16) - 13 >
- 26 × 5 + 51 (26 × 51) + 5 <
- 25 × 4 + 28 (25 × 28) + 4 <
- 265 + 10 - 33 265 - 10 + 33 <
- 82 × 1 + 78 (82 × 78) + 1 <
- 52 × 8 - 44 (52 × 44) - 8 <
- 74 × 5 - 62 (74 × 62) - 5 <
- 10 × 3 + 89 (10 × 89) + 3 <
- 600 ÷ 24 - 20 (600 ÷ 24) + 20 <
- 81 × 8 - 84 (81 × 84) - 8 <
- 811 - 19 + 44 (811 + 19) - 44 >
- 414 + 10 - 61 414 - 10 + 61 <
- 23 × 1 - 23 (23 × 23) - 1 <
- 666 + 10 - 11 666 - 10 + 11 <
- 87 × 4 + 48 (87 × 48) + 4 <
- 328 - 59 + 94 (328 + 59) - 94 >
- 757 - 66 + 21 (757 + 66) - 21 <
- 791 + 10 - 16 791 - 10 + 16 <
- 70 × 4 + 48 (70 × 48) + 4 <
- 750 ÷ 15 + 10 (750 ÷ 15) - 10 >
- 56 × 3 + 53 (56 × 53) + 3 <
- 189 ÷ 21 - 3 (189 ÷ 21) + 3 <
- 680 + 10 - 26 680 - 10 + 26 <
- 637 ÷ 49 - 7 (637 ÷ 49) + 7 <
- 55 × 3 + 95 (55 × 95) + 3 <
- 434 - 85 + 92 (434 + 85) - 92 >
- 630 ÷ 10 - 45 (630 ÷ 10) + 45 <
- 384 ÷ 32 - 2 (384 ÷ 32) + 2 <
- 600 ÷ 12 + 20 (600 ÷ 12) - 20 >
- 552 ÷ 69 - 1 (552 ÷ 69) + 1 <
- 213 + 10 - 33 213 - 10 + 33 <
- 720 + 10 - 23 720 - 10 + 23 <
- 531 - 12 + 76 (531 + 12) - 76 >
- 594 ÷ 18 - 2 (594 ÷ 18) + 2 <
- 65 + 10 - 50 65 - 10 + 50 <
- 79 × 8 - 32 (79 × 32) - 8 <
- 937 + 10 - 92 937 - 10 + 92 <
- 538 - 56 + 90 (538 + 56) - 90 >
- 328 + 10 - 30 328 - 10 + 30 <
- 452 + 10 - 24 452 - 10 + 24 <
- 82 × 8 + 10 (82 × 10) + 8 <
- 35 × 1 + 86 (35 × 86) + 1 <
- 810 ÷ 45 - 15 (810 ÷ 45) + 15 <
- 672 ÷ 12 + 16 (672 ÷ 12) - 16 >
- 738 ÷ 18 + 41 (738 ÷ 18) - 41 >
- 345 ÷ 69 - 1 (345 ÷ 69) + 1 <
- 50 - 65 + 34 (50 + 65) - 34 <
- 79 × 2 - 70 (79 × 70) - 2 <
- 873 - 12 + 85 (873 + 12) - 85 >
- 17 × 2 + 70 (17 × 70) + 2 <
- 278 - 27 + 43 (278 + 27) - 43 >
- 84 × 9 + 65 (84 × 65) + 9 <
- 924 ÷ 14 + 66 (924 ÷ 14) - 66 >
- 638 ÷ 58 + 11 (638 ÷ 58) - 11 >
- 78 × 4 - 14 (78 × 14) - 4 <
- 190 ÷ 19 - 10 (190 ÷ 19) + 10 <
- 308 ÷ 11 - 11 (308 ÷ 11) + 11 <
- 67 × 9 - 65 (67 × 65) - 9 <
- 952 ÷ 14 - 28 (952 ÷ 14) + 28 <
- 243 + 10 - 50 243 - 10 + 50 <
- 550 ÷ 25 + 10 (550 ÷ 25) - 10 >
- 56 × 3 - 15 (56 × 15) - 3 <
- 33 × 5 - 61 (33 × 61) - 5 <
- 816 ÷ 12 + 34 (816 ÷ 12) - 34 >
- 666 ÷ 37 - 18 (666 ÷ 37) + 18 <
- 756 ÷ 54 + 12 (756 ÷ 54) - 12 >
- 368 ÷ 16 + 16 (368 ÷ 16) - 16 >
- 22 × 2 - 42 (22 × 42) - 2 <
- 660 ÷ 10 - 55 (660 ÷ 10) + 55 <
- 294 + 10 - 32 294 - 10 + 32 <
- 97 - 90 + 90 (97 + 90) - 90 =
- 18 × 7 - 89 (18 × 89) - 7 <
- 10 × 9 - 81 (10 × 81) - 9 <
- 180 + 10 - 80 180 - 10 + 80 <
- 213 + 10 - 97 213 - 10 + 97 <
- 84 × 1 - 19 (84 × 19) - 1 <
- 882 ÷ 42 - 18 (882 ÷ 42) + 18 <
- 424 + 10 - 40 424 - 10 + 40 <
- 83 × 9 - 84 (83 × 84) - 9 <
- 532 + 10 - 16 532 - 10 + 16 <
- 640 ÷ 20 - 20 (640 ÷ 20) + 20 <
- 144 - 99 + 23 (144 + 99) - 23 <
- 396 ÷ 18 + 18 (396 ÷ 18) - 18 >
- 763 - 47 + 49 (763 + 47) - 49 >
- 39 × 7 - 25 (39 × 25) - 7 <
- 802 - 33 + 67 (802 + 33) - 67 >
- 930 ÷ 31 + 10 (930 ÷ 31) - 10 >
- 430 ÷ 10 - 2 (430 ÷ 10) + 2 <
- 528 - 52 + 37 (528 + 52) - 37 <
- 297 + 10 - 50 297 - 10 + 50 <
- 396 ÷ 44 - 2 (396 ÷ 44) + 2 <
- 78 × 5 + 66 (78 × 66) + 5 <
- 465 + 10 - 75 465 - 10 + 75 <
- 936 ÷ 52 - 6 (936 ÷ 52) + 6 <
- 798 + 10 - 89 798 - 10 + 89 <
- 930 ÷ 15 + 30 (930 ÷ 15) - 30 >
- 990 + 10 - 64 990 - 10 + 64 <
- 866 - 77 + 23 (866 + 77) - 23 <
- 812 - 85 + 83 (812 + 85) - 83 <
- 494 ÷ 38 + 13 (494 ÷ 38) - 13 >
- 571 - 24 + 57 (571 + 24) - 57 >
- 984 - 62 + 98 (984 + 62) - 98 >
- 528 ÷ 22 - 16 (528 ÷ 22) + 16 <
- 192 - 88 + 37 (192 + 88) - 37 <
- 442 - 85 + 21 (442 + 85) - 21 <
- 80 × 3 + 80 (80 × 80) + 3 <
- 154 - 71 + 87 (154 + 71) - 87 >
- 869 ÷ 11 - 79 (869 ÷ 11) + 79 <
- 28 × 3 + 25 (28 × 25) + 3 <
- 624 ÷ 24 - 16 (624 ÷ 24) + 16 <
- 750 ÷ 15 - 30 (750 ÷ 15) + 30 <
- 43 - 56 + 78 (43 + 56) - 78 >
- 71 × 2 - 78 (71 × 78) - 2 <
- 47 × 7 + 25 (47 × 25) + 7 <
- 95 × 2 - 42 (95 × 42) - 2 <
- 748 ÷ 34 - 17 (748 ÷ 34) + 17 <
- 208 - 72 + 14 (208 + 72) - 14 <
- 87 × 6 + 66 (87 × 66) + 6 <
- 38 × 9 - 33 (38 × 33) - 9 <
- 21 × 7 - 77 (21 × 77) - 7 <
- 51 × 4 + 78 (51 × 78) + 4 <
- 12 × 6 - 27 (12 × 27) - 6 <
- 74 × 3 - 9 (74 × 9) - 3 <
- 316 - 85 + 91 (316 + 85) - 91 >
- 92 × 3 + 90 (92 × 90) + 3 <
- 442 ÷ 34 + 13 (442 ÷ 34) - 13 >
- 90 × 1 + 29 (90 × 29) + 1 <
- 16 × 4 - 18 (16 × 18) - 4 <
- 507 ÷ 13 + 39 (507 ÷ 13) - 39 >
- 62 × 5 - 67 (62 × 67) - 5 <
- 58 × 8 - 93 (58 × 93) - 8 <
- 672 ÷ 12 + 12 (672 ÷ 12) - 12 >
- 910 ÷ 65 - 2 (910 ÷ 65) + 2 <
- 859 + 10 - 95 859 - 10 + 95 <
- 920 ÷ 23 - 20 (920 ÷ 23) + 20 <
- 884 - 54 + 92 (884 + 54) - 92 >
- 738 + 10 - 41 738 - 10 + 41 <
- 37 × 7 - 50 (37 × 50) - 7 <
- 49 × 3 + 47 (49 × 47) + 3 <
- 14 × 5 + 70 (14 × 70) + 5 <
- 900 ÷ 36 + 25 (900 ÷ 36) - 25 >
- 335 ÷ 67 - 1 (335 ÷ 67) + 1 <
- 930 ÷ 93 - 6 (930 ÷ 93) + 6 <
- 578 ÷ 17 + 17 (578 ÷ 17) - 17 >
- 810 ÷ 15 + 30 (810 ÷ 15) - 30 >
- 842 + 10 - 68 842 - 10 + 68 <
- 55 × 1 - 17 (55 × 17) - 1 <
- 683 + 10 - 99 683 - 10 + 99 <
- 58 × 6 - 54 (58 × 54) - 6 <
- 373 - 40 + 68 (373 + 40) - 68 >
- 718 - 78 + 13 (718 + 78) - 13 <
- 59 × 2 - 85 (59 × 85) - 2 <
- 892 + 10 - 68 892 - 10 + 68 <
- 840 ÷ 15 - 1 (840 ÷ 15) + 1 <
- 714 ÷ 17 - 34 (714 ÷ 17) + 34 <
- 515 - 96 + 41 (515 + 96) - 41 <
- 21 × 8 + 34 (21 × 34) + 8 <
- 175 + 10 - 89 175 - 10 + 89 <
- 984 ÷ 82 - 1 (984 ÷ 82) + 1 <
- 79 × 2 - 56 (79 × 56) - 2 <
- 436 - 96 + 75 (436 + 96) - 75 <
- 504 ÷ 84 - 3 (504 ÷ 84) + 3 <
- 99 × 9 - 26 (99 × 26) - 9 <
- 35 × 7 + 39 (35 × 39) + 7 <
- 839 + 10 - 17 839 - 10 + 17 <
- 247 ÷ 19 + 13 (247 ÷ 19) - 13 >
- 63 × 3 + 38 (63 × 38) + 3 <
- 98 × 4 - 86 (98 × 86) - 4 <
- 99 × 2 - 53 (99 × 53) - 2 <
- 64 × 3 - 82 (64 × 82) - 3 <
- 969 + 10 - 12 969 - 10 + 12 <
- 38 + 10 - 28 38 - 10 + 28 <
- 290 ÷ 10 + 29 (290 ÷ 10) - 29 >
- 68 × 7 - 77 (68 × 77) - 7 <
- 481 ÷ 37 + 13 (481 ÷ 37) - 13 >
- 73 - 33 + 51 (73 + 33) - 51 >
- 459 - 13 + 76 (459 + 13) - 76 >
- 686 + 10 - 61 686 - 10 + 61 <
- 47 × 2 + 52 (47 × 52) + 2 <
- 900 ÷ 12 + 15 (900 ÷ 12) - 15 >
- 840 ÷ 15 - 56 (840 ÷ 15) + 56 <
- 282 - 11 + 74 (282 + 11) - 74 >
- 651 + 10 - 89 651 - 10 + 89 <
- 69 × 2 + 72 (69 × 72) + 2 <
- 190 - 92 + 87 (190 + 92) - 87 <
- 28 × 5 + 55 (28 × 55) + 5 <
- 760 ÷ 20 - 20 (760 ÷ 20) + 20 <
- 644 ÷ 46 - 7 (644 ÷ 46) + 7 <
- 513 ÷ 19 - 1 (513 ÷ 19) + 1 <
- 43 × 2 + 98 (43 × 98) + 2 <
- 60 × 7 + 93 (60 × 93) + 7 <
- 901 - 89 + 53 (901 + 89) - 53 <
- 41 × 4 + 78 (41 × 78) + 4 <
- 58 × 9 - 32 (58 × 32) - 9 <
- 74 × 5 - 99 (74 × 99) - 5 <
- 252 + 10 - 91 252 - 10 + 91 <
- 540 ÷ 10 + 45 (540 ÷ 10) - 45 >
- 667 ÷ 23 + 29 (667 ÷ 23) - 29 >
- 18 × 4 + 33 (18 × 33) + 4 <
- 47 × 1 + 74 (47 × 74) + 1 <
- 666 ÷ 74 - 3 (666 ÷ 74) + 3 <
- 261 - 33 + 39 (261 + 33) - 39 >
- 341 - 44 + 80 (341 + 44) - 80 >
- 336 ÷ 24 - 1 (336 ÷ 24) + 1 <
- 351 - 39 + 18 (351 + 39) - 18 <
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- 160 + 10 - 14 160 - 10 + 14 <
- 966 ÷ 14 - 7 (966 ÷ 14) + 7 <
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- 92 × 7 - 78 (92 × 78) - 7 <
- 475 - 88 + 52 (475 + 88) - 52 <
- 280 ÷ 20 + 10 (280 ÷ 20) - 10 >
- 78 × 4 - 6 (78 × 6) - 4 <
- 644 ÷ 14 - 1 (644 ÷ 14) + 1 <
- 240 ÷ 12 + 15 (240 ÷ 12) - 15 >
- 528 ÷ 12 + 24 (528 ÷ 12) - 24 >
- 79 × 2 + 68 (79 × 68) + 2 <
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- 810 ÷ 30 + 18 (810 ÷ 30) - 18 >
- 89 × 7 + 64 (89 × 64) + 7 <
- 94 × 5 - 25 (94 × 25) - 5 <
- 756 ÷ 14 + 18 (756 ÷ 14) - 18 >
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- 24 × 9 + 87 (24 × 87) + 9 <
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- 226 + 10 - 17 226 - 10 + 17 <
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- 687 + 10 - 37 687 - 10 + 37 <
- 70 × 4 + 32 (70 × 32) + 4 <
- 85 × 1 + 36 (85 × 36) + 1 <
- 686 ÷ 14 + 14 (686 ÷ 14) - 14 >
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- 324 + 10 - 70 324 - 10 + 70 <
- 36 × 3 - 57 (36 × 57) - 3 <
- 27 × 6 + 53 (27 × 53) + 6 <
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- 40 × 4 + 20 (40 × 20) + 4 <
- 71 × 5 - 63 (71 × 63) - 5 <
- 910 ÷ 26 + 35 (910 ÷ 26) - 35 >
- 162 - 52 + 37 (162 + 52) - 37 <
- 730 - 62 + 59 (730 + 62) - 59 <
- 40 × 2 - 59 (40 × 59) - 2 <
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- 31 × 1 + 45 (31 × 45) + 1 <
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- 85 × 2 + 93 (85 × 93) + 2 <
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- 56 × 4 + 50 (56 × 50) + 4 <
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- 35 × 4 - 85 (35 × 85) - 4 <
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- 48 × 6 + 43 (48 × 43) + 6 <
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- 832 ÷ 16 - 1 (832 ÷ 16) + 1 <
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- 73 × 7 + 72 (73 × 72) + 7 <
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- 995 - 54 + 98 (995 + 54) - 98 >
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- 373 - 56 + 45 (373 + 56) - 45 <
- 432 ÷ 12 + 24 (432 ÷ 12) - 24 >
- 62 × 8 + 62 (62 × 62) + 8 <
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- 15 × 6 + 40 (15 × 40) + 6 <
- 966 ÷ 42 - 21 (966 ÷ 42) + 21 <
- 31 × 6 - 11 (31 × 11) - 6 <
- 739 - 37 + 11 (739 + 37) - 11 <
- 32 × 7 + 21 (32 × 21) + 7 <
- 79 × 6 - 73 (79 × 73) - 6 <
- 74 × 4 + 45 (74 × 45) + 4 <
- 39 × 7 + 47 (39 × 47) + 7 <
- 284 + 10 - 91 284 - 10 + 91 <
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- 891 - 84 + 48 (891 + 84) - 48 <
- 41 × 3 + 48 (41 × 48) + 3 <
- 390 - 94 + 64 (390 + 94) - 64 <
- 936 ÷ 13 - 6 (936 ÷ 13) + 6 <
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- 42 × 6 + 39 (42 × 39) + 6 <
- 273 ÷ 21 - 1 (273 ÷ 21) + 1 <
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- 986 ÷ 34 - 17 (986 ÷ 34) + 17 <
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- 66 × 5 + 90 (66 × 90) + 5 <
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- 945 ÷ 15 + 21 (945 ÷ 15) - 21 >
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- 85 × 1 + 66 (85 × 66) + 1 <
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- 410 + 10 - 79 410 - 10 + 79 <
- 26 × 1 - 14 (26 × 14) - 1 <
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- 29 × 2 + 34 (29 × 34) + 2 <
- 345 ÷ 23 + 15 (345 ÷ 23) - 15 >
- 336 ÷ 16 - 1 (336 ÷ 16) + 1 <
- 39 × 3 + 86 (39 × 86) + 3 <
- 76 × 9 + 61 (76 × 61) + 9 <
- 710 + 10 - 10 710 - 10 + 10 =
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- 88 × 3 - 25 (88 × 25) - 3 <
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- 221 ÷ 13 - 1 (221 ÷ 13) + 1 <
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- 65 × 7 + 39 (65 × 39) + 7 <
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- 819 ÷ 13 + 13 (819 ÷ 13) - 13 >
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- 45 × 9 + 34 (45 × 34) + 9 <
- 844 - 70 + 93 (844 + 70) - 93 >
- 792 ÷ 36 - 3 (792 ÷ 36) + 3 <
- 735 ÷ 21 + 21 (735 ÷ 21) - 21 >
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- 317 + 10 - 95 317 - 10 + 95 <
- 25 × 3 + 16 (25 × 16) + 3 <
- 72 + 10 - 26 72 - 10 + 26 <
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- 69 × 3 + 91 (69 × 91) + 3 <
- 672 ÷ 84 - 8 (672 ÷ 84) + 8 <
- 248 + 10 - 66 248 - 10 + 66 <
- 274 - 45 + 45 (274 + 45) - 45 =
- 684 ÷ 19 - 12 (684 ÷ 19) + 12 <
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- 43 × 6 - 40 (43 × 40) - 6 <
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- 33 × 7 + 66 (33 × 66) + 7 <
- 960 ÷ 10 - 10 (960 ÷ 10) + 10 <
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- 55 × 5 + 38 (55 × 38) + 5 <
- 782 ÷ 23 + 17 (782 ÷ 23) - 17 >
- 139 - 36 + 27 (139 + 36) - 27 <
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- 96 × 3 + 13 (96 × 13) + 3 <
- 192 ÷ 24 - 3 (192 ÷ 24) + 3 <
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- 15 × 7 - 70 (15 × 70) - 7 <
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- 28 × 6 - 31 (28 × 31) - 6 <
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- 932 - 45 + 69 (932 + 45) - 69 >
- 702 - 32 + 20 (702 + 32) - 20 <
- 803 ÷ 73 + 11 (803 ÷ 73) - 11 >
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- 840 ÷ 20 + 24 (840 ÷ 20) - 24 >
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- 396 ÷ 12 - 33 (396 ÷ 12) + 33 <
- 943 ÷ 23 - 41 (943 ÷ 23) + 41 <
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- 722 ÷ 38 - 19 (722 ÷ 38) + 19 <
- 480 ÷ 12 + 32 (480 ÷ 12) - 32 >
- 52 × 1 + 83 (52 × 83) + 1 <
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- 87 × 9 + 23 (87 × 23) + 9 <
- 31 × 8 + 48 (31 × 48) + 8 <
- 930 ÷ 31 + 10 (930 ÷ 31) - 10 >
- 925 - 44 + 82 (925 + 44) - 82 >
- 959 - 76 + 67 (959 + 76) - 67 <
- 617 + 10 - 85 617 - 10 + 85 <
- 795 ÷ 53 + 15 (795 ÷ 53) - 15 >
- 221 + 10 - 70 221 - 10 + 70 <
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- 779 + 10 - 97 779 - 10 + 97 <
- 896 ÷ 56 - 16 (896 ÷ 56) + 16 <
- 528 ÷ 16 + 22 (528 ÷ 16) - 22 >
- 438 + 10 - 40 438 - 10 + 40 <
- 940 ÷ 10 + 20 (940 ÷ 10) - 20 >
- 67 × 1 - 1 (67 × 1) - 1 =
- 498 + 10 - 72 498 - 10 + 72 <
- 492 ÷ 12 - 4 (492 ÷ 12) + 4 <
- 987 - 53 + 18 (987 + 53) - 18 <
- 25 × 3 - 69 (25 × 69) - 3 <
- 42 × 4 - 14 (42 × 14) - 4 <
- 474 - 50 + 99 (474 + 50) - 99 >
- 69 × 9 + 44 (69 × 44) + 9 <
- 53 × 1 + 13 (53 × 13) + 1 <
- 83 × 2 + 67 (83 × 67) + 2 <
- 69 × 9 - 12 (69 × 12) - 9 <
- 35 × 3 + 59 (35 × 59) + 3 <
- 280 - 19 + 45 (280 + 19) - 45 >
- 302 - 42 + 38 (302 + 42) - 38 <
- 18 × 3 + 46 (18 × 46) + 3 <
- 10 + 10 - 16 10 - 10 + 16 <
- 86 × 1 - 22 (86 × 22) - 1 <
- 794 - 75 + 19 (794 + 75) - 19 <
- 736 - 44 + 89 (736 + 44) - 89 >
- 960 ÷ 15 + 20 (960 ÷ 15) - 20 >
- 769 - 98 + 68 (769 + 98) - 68 <
- 615 + 10 - 65 615 - 10 + 65 <
- 13 × 3 - 19 (13 × 19) - 3 <
- 671 + 10 - 38 671 - 10 + 38 <
- 542 - 44 + 12 (542 + 44) - 12 <
- 525 ÷ 21 + 15 (525 ÷ 21) - 15 >
※总分：100分， 共计：490道题， 每题：0.20 分。