【120道乘法結合律四年級的計算題】乘法結合律是小學數學中一個重要的運算定律，它指的是在進行三個或更多數相乘時，無論先將哪兩個數相乘，結果都不會改變。其公式為：
(a × b) × c = a × (b × c)
為了幫助四年級學生更好地掌握和運用乘法結合律，我們整理了120道相關的計算題，并附上答案，方便練習與復習。
一、題目匯總（共120題）
以下為120道乘法結合律的計算題，每道題均涉及三個數的乘法運算，要求學生靈活運用結合律進行簡便計算。
| 題號 | 題目 | 答案 |
| 1 | (2 × 3) × 4 | 24 |
| 2 | (5 × 6) × 7 | 210 |
| 3 | (8 × 9) × 10 | 720 |
| 4 | (3 × 4) × 5 | 60 |
| 5 | (6 × 7) × 8 | 336 |
| 6 | (9 × 10) × 11 | 990 |
| 7 | (2 × 5) × 3 | 30 |
| 8 | (4 × 7) × 2 | 56 |
| 9 | (6 × 8) × 5 | 240 |
| 10 | (10 × 3) × 4 | 120 |
| 11 | (7 × 5) × 6 | 210 |
| 12 | (9 × 2) × 7 | 126 |
| 13 | (11 × 2) × 3 | 66 |
| 14 | (12 × 4) × 5 | 240 |
| 15 | (13 × 3) × 2 | 78 |
| 16 | (14 × 5) × 6 | 420 |
| 17 | (15 × 4) × 3 | 180 |
| 18 | (16 × 2) × 7 | 224 |
| 19 | (17 × 3) × 5 | 255 |
| 20 | (18 × 6) × 4 | 432 |
| 21 | (19 × 7) × 2 | 266 |
| 22 | (20 × 5) × 3 | 300 |
| 23 | (21 × 4) × 6 | 504 |
| 24 | (22 × 3) × 5 | 330 |
| 25 | (23 × 2) × 7 | 322 |
| 26 | (24 × 5) × 4 | 480 |
| 27 | (25 × 6) × 3 | 450 |
| 28 | (26 × 4) × 5 | 520 |
| 29 | (27 × 3) × 2 | 162 |
| 30 | (28 × 7) × 6 | 1176 |
| 31 | (29 × 5) × 4 | 580 |
| 32 | (30 × 2) × 8 | 480 |
| 33 | (31 × 6) × 5 | 930 |
| 34 | (32 × 3) × 7 | 672 |
| 35 | (33 × 4) × 2 | 264 |
| 36 | (34 × 5) × 6 | 1020 |
| 37 | (35 × 2) × 8 | 560 |
| 38 | (36 × 7) × 4 | 1008 |
| 39 | (37 × 3) × 5 | 555 |
| 40 | (38 × 6) × 2 | 456 |
| 41 | (39 × 4) × 5 | 780 |
| 42 | (40 × 3) × 7 | 840 |
| 43 | (41 × 2) × 6 | 492 |
| 44 | (42 × 5) × 3 | 630 |
| 45 | (43 × 7) × 4 | 1204 |
| 46 | (44 × 6) × 2 | 528 |
| 47 | (45 × 3) × 5 | 675 |
| 48 | (46 × 4) × 6 | 1104 |
| 49 | (47 × 2) × 8 | 752 |
| 50 | (48 × 5) × 3 | 720 |
| 51 | (49 × 7) × 2 | 686 |
| 52 | (50 × 6) × 4 | 1200 |
| 53 | (51 × 3) × 5 | 765 |
| 54 | (52 × 4) × 6 | 1248 |
| 55 | (53 × 2) × 7 | 742 |
| 56 | (54 × 5) × 3 | 810 |
| 57 | (55 × 6) × 4 | 1320 |
| 58 | (56 × 7) × 2 | 784 |
| 59 | (57 × 3) × 5 | 855 |
| 60 | (58 × 4) × 6 | 1392 |
| 61 | (59 × 2) × 8 | 944 |
| 62 | (60 × 5) × 3 | 900 |
| 63 | (61 × 7) × 4 | 1708 |
| 64 | (62 × 6) × 2 | 744 |
| 65 | (63 × 3) × 5 | 945 |
| 66 | (64 × 4) × 6 | 1536 |
| 67 | (65 × 2) × 7 | 910 |
| 68 | (66 × 5) × 3 | 990 |
| 69 | (67 × 7) × 4 | 1876 |
| 70 | (68 × 6) × 2 | 816 |
| 71 | (69 × 3) × 5 | 1035 |
| 72 | (70 × 4) × 6 | 1680 |
| 73 | (71 × 2) × 8 | 1136 |
| 74 | (72 × 5) × 3 | 1080 |
| 75 | (73 × 7) × 4 | 2044 |
| 76 | (74 × 6) × 2 | 888 |
| 77 | (75 × 3) × 5 | 1125 |
| 78 | (76 × 4) × 6 | 1824 |
| 79 | (77 × 2) × 8 | 1232 |
| 80 | (78 × 5) × 3 | 1170 |
| 81 | (79 × 7) × 4 | 2212 |
| 82 | (80 × 6) × 2 | 960 |
| 83 | (81 × 3) × 5 | 1215 |
| 84 | (82 × 4) × 6 | 1968 |
| 85 | (83 × 2) × 8 | 1328 |
| 86 | (84 × 5) × 3 | 1260 |
| 87 | (85 × 7) × 4 | 2380 |
| 88 | (86 × 6) × 2 | 1032 |
| 89 | (87 × 3) × 5 | 1305 |
| 90 | (88 × 4) × 6 | 2112 |
| 91 | (89 × 2) × 8 | 1424 |
| 92 | (90 × 5) × 3 | 1350 |
| 93 | (91 × 7) × 4 | 2548 |
| 94 | (92 × 6) × 2 | 1104 |
| 95 | (93 × 3) × 5 | 1395 |
| 96 | (94 × 4) × 6 | 2256 |
| 97 | (95 × 2) × 8 | 1520 |
| 98 | (96 × 5) × 3 | 1440 |
| 99 | (97 × 7) × 4 | 2716 |
| 100 | (98 × 6) × 2 | 1176 |
| 101 | (99 × 3) × 5 | 1485 |
| 102 | (100 × 4) × 6 | 2400 |
| 103 | (101 × 2) × 8 | 1616 |
| 104 | (102 × 5) × 3 | 1530 |
| 105 | (103 × 7) × 4 | 2884 |
| 106 | (104 × 6) × 2 | 1248 |
| 107 | (105 × 3) × 5 | 1575 |
| 108 | (106 × 4) × 6 | 2544 |
| 109 | (107 × 2) × 8 | 1712 |
| 110 | (108 × 5) × 3 | 1620 |
| 111 | (109 × 7) × 4 | 3052 |
| 112 | (110 × 6) × 2 | 1320 |
| 113 | (111 × 3) × 5 | 1665 |
| 114 | (112 × 4) × 6 | 2688 |
| 115 | (113 × 2) × 8 | 1808 |
| 116 | (114 × 5) × 3 | 1710 |
| 117 | (115 × 7) × 4 | 3220 |
| 118 | (116 × 6) × 2 | 1392 |
| 119 | (117 × 3) × 5 | 1755 |
| 120 | (118 × 4) × 6 | 2832 |
二、總結
通過這120道乘法結合律的練習題，學生可以熟練掌握如何利用結合律簡化運算過程，提高計算速度和準確性。建議在學習過程中多進行對比練習，觀察不同組合下的計算結果是否一致，從而加深對乘法結合律的理解。
希望這份練習題能對廣大小學四年級的學生有所幫助，也歡迎家長和老師根據實際需要進行調整和拓展。
