第 3 课时 3 倍数的特征学习检测 附参考答案 1. 3 的倍数:21,84,36,57,147,936,54 2. 有余数的除法算式为: 36535238532123923 3. 组成的数是 3 的倍数有:249,294,492,429,924,942,459, 495,549,594,945,954 组成的数既是 3 的倍数又是 2 的倍数:294,924,942,492,954, 594 4. (1) (2) (3) (4) (5) (6) (7) (8) 5. 2 的倍数有:52,54,56,58,60,62,64,66,68,70,72, 74,76,78,80,82,84,86,88,90,92,94,96,98,100 3 的倍数有:51,54,57,60,63,66,69,72,75,78,81, 84,87,90,93,96,99 既是 2 的倍数又是 3 的倍数有:54,60,66,72,78,84,90,96