三年级数学下册口算练习题 暑假作业第 1 日 (1)27 + 46 = (2)90 + 47 = (3)18 + 15 = (4)92 + 65 = (5)18 + 53 = (6)29 + 32 = (7)14 + 56 = (8)72 + 76 = (9)71 + 68 = (10)39 + 79 = (11)64 + 60 = (12)38 + 69 = (13)83 + 62 = (14)12 + 98 = (15)17 + 84 = (1)175 + 157 = (2)645 + 239 = (3)808 + 213 = (4)256 + 775 = (5)607 + 914 = (6)352 + 708 = (7)766 + 792 = (8)970 + 602 = (9)343 + 801 = (10)916 + 861 = (11)806 + 487 = (12)691 + 400 = (13)106 + 537 = (14)353 + 939 = (15)328 + 114 = 三年级数学下册口算练习题 暑假作业第 2 日 (1)810 - 125 = (2)648 - 585 = (3)398 - 148 = (4)716 - 117 = (5)704 - 124 = (6)449 - 312 = (7)713 - 288 = (8)202 - 155 = (9)954 - 286 = (10)802 - 668 = (11)860 - 162 = (12)287 - 167 = (13)859 - 371 = (14)941 - 343 = (15)472 - 425 = (1)900 - 168 = (2)300 - 186 = (3)900 - 554 = (4)800 - 200 = (5)700 - 666 = (6)300 - 122 = (7)900 - 353 = (8)500 - 162 = (9)900 - 705 = (10)400 - 133 = (11)200 - 158 = (12)300 - 257 = (13)400 - 157 = (14)700 - 205 = (15)300 - 288 = 三年级数学下册口算练习题 暑假作业第 3 日 (1)70 × 5 = (2)50 × 9 = (3)10 × 8 = (4)7 × 30 = (5)2 × 90 = (6)70 × 8 = (7)6 × 20 = (8)9 × 70 = (9)2 × 90 = (10)20 × 1 = (11)8 × 80 = (12)60 × 3 = (13)50 × 4 = (14)90 × 7 = (15)6 × 20 = (1)5 × 10 = (2)30 × 6 = (3)70 × 4 = (4)7 × 80 = (5)40 × 8 = (6)4 × 80 = (7)90 × 4 = (8)10 × 6 = (9)90 × 4 = (10)60 × 9 = (11)90 × 1 = (12)3 × 60 = (13)1 × 50 = (14)8 × 60 = (15)2 × 30 = 三年级数学下册口算练习题 ...