第5单元 观察物体(一)-【优佳好】2023-2024学年二年级上册数学口算计算能力提升（人教版）

单元 5 　 第 1 课时　 观察物体 2 年级 上 R 43 - 37 = 78 - 70 = 92 - 82 = 3 × 4 - 6 = 7 + 37 = 75 + 13 = 56 + 20 = 2 × 5 + 8 = 92 - 5 = 88 - 13 = 34 + 54 = 4 × 4 - 4 = 85 - 13 = 80 - 6 = 80 - 20 = 5 × 3 + 9 = 8 + 45 = 77 + 22 = 36 + 7 = 4 × 2 + 7 = 61 + 27 = 69 + 4 = 74 - 51 = 6 × 6 - 5 = 26 - 21 = 62 - 31 = 3 × 6 = 5 × 4 - 2 = 4 × 2 = 5 × 3 = 2 × 5 = 3 × 3 + 6 = 6 × 4 = 2 × 2 = 4 × 5 = 6 × 2 + 8 = 5 × 6 = 6 × 6 = 4 × 4 = 3 × 5 - 7 = 63 - 47 = 80 - 48 = 66 - 29 = 13 + 44 + 38 = 35 + (83 - 34) = 64 - 60 + 43 = 64 单元 5 　 第 2 课时　 练习课 2 年级 上 R 11 + 32 = 4 × 1 = 2 × 5 = 3 × 3 = 35 - 17 = 2 × 4 = 6 × 6 = 5 × 1 = 60 - 48 = 3 × 4 = 4 × 2 = 6 × 5 = 25 + 33 = 3 × 6 = 4 × 4 = 5 × 5 = 73 - 26 = 3 × 2 = 5 × 3 = 6 × 4 = 80 - 49 = 5 × 6 = 4 × 6 - 5 = 5 × 5 - 10 = 63 - 22 = 5 × 3 - 6 = 3 × 6 + 12 = 5 × 6 - 18 = 90 - 40 = 5 × 3 - 5 = 4 × 4 - 7 = 3 × 1 + 20 = 49 + 21 = 5 × 2 + 6 = 3 × 4 + 17 = 5 × 1 + 18 = 53 - 26 = 6 × 6 - 27 = 6 × 1 + 8 = 3 × 6 - 9 = 75 - 36 = 48 - 27 = 66 + 29 = 69 - 45 + 29 = 86 - 18 - 55 = 18 + 57 + 15 = 74 单元 5 　 第 5 单元计算易错专练　 2 年级 上 R 1. 直接写出得数。 3 × 5 = 11 + 45 = 26 + 47 = 3 × 2 + 7 = 5 × 4 = 6 × 3 = 4 × 6 = 4 × 5 + 8 = 70 - 32 = 5 × 2 = 4 × 4 = 3 × 3 - 2 = 30 - 28 = 3 × 3 = 43 - 27 = 4 × 6 - 4 = 4 × 3 = 3 × 6 = 15 + 24 = 2 × 6 + 8 = 48 - 26 = 37 + 22 = 5 × 5 = 3 × 5 + 6 = 2. 在 里填上合适的数。 3 × = 18 42 + = 63 52 - = 18 - 17 = 45 × 4 = 16 5 × = 20 6 × = 30 35 + = 60 2 × = 12 × 3 = 18 + 43 = 62 × 6 = 36 3. 列竖式计算。 35 + 46 = 42 - 23 = 54 - 29 = 75 - 27 - 13 = 35 + 26 + 18 = 63 - 38 + 42 = 84 [2年级上R 参考答案 口快了 结束时间 时 分一开始时间 时 分=做题时间 《⑨比上次口慢7 分 竖式计算提升 竖式计算提升 873735 80779 559347 958116 第36页 第42页 口算能力提升 口算能力提升 441657 965 81 2101263 32212316 54 153616 12104914 206426 1220833 35839 1621919 1820252 306814 2251590 1034158 16642638 433815 2325021 7151120 94237538 2571224 竖式计算提升 竖式计算提升 5810087 491878 832442 783959 第37页 第43页 口算能力提升 口算能力提升 3122015 65 9 50 448 24 9362412 20128 8 6301512 825 8 4816 58 66 25 24 18464 16101530 15251046 1262024 12558092 2115 10 40 9272536 3061245 1815.720 63213916 26