20道加减混合运算四年级下册的有答案
回答如下：1. 45 + 27 - 13 = 59 2. 68 - 23 + 15 = 60 3. 96 - 12 - 23 = 61 4. 85 + 27 - 49 = 63 5. 64 - 27 + 18 = 55 6. 92 - 35 + 14 = 71 7. 78 + 24 - 39 = 63 8. 56 - 15 + 27 = 68 9. 74 - 29 - 17 = 28 10. 83 + 18 - 39 = 62 11. 47 - 18 + 24 = 53 12. 69 + 15...