第1单元 数据收集和整理-【优佳好】2023-2024学年二年级下册数学口算计算能力提升（人教版）

单元 1 　 第 1 课时　 数据收集整理(1)(教材 P2) 2 年级 下 R 90 + 8 = 7 × 4 = 42 - 18 = 50 - 40 = 3 × 9 = 95 - 25 = 9 × 8 = 5 × 7 = 74 - 60 = 58 - 9 = 74 - 20 = 6 × 5 = 4 × 5 = 17 + 9 = 6 × 8 = 36 + 63 = 4 × 6 = 2 × 4 = 3 × 5 = 61 - 8 = 97 - 70 = 9 × 5 = 2 × 7 = 4 × 9 = 9 × 6 = 73 - 53 = 97 - 25 = 48 + 30 = 56 - 40 = 7 × 8 = 6 × 8 = 5 × 8 = 34 - 4 = 6 × 4 = 74 + 20 = 7 × 3 = 75 - 40 = 39 - 24 = 6 × 6 = 97 - 70 = 34 + 45 = 　 　 　 　 　 　 　 25 + 28 = 　 　 　 　 　 　 　 70 - 46 = 52 - 37 = 48 + 36 = 62 - 38 = 1 单元 1 　 第 2 课时　 数据收集整理(2)(教材 P3) 2 年级 下 R 45 - 5 = 70 - 9 = 9 × 4 = 4 × 6 = 5 × 9 = 62 - 2 = 37 + 9 = 9 × 2 = 80 - 17 = 75 - 70 = 20 + 7 = 6 × 8 = 30 + 40 = 90 - 30 = 2 × 4 = 36 + 4 = 15 + 33 = 9 × 7 = 77 - 40 = 30 + 24 = 19 + 7 = 5 × 7 = 35 + 42 = 13 + 26 = 54 - 20 = 7 × 7 = 76 - 30 = 49 + 20 = 4 × 4 = 99 - 36 = 42 + 20 = 66 - 42 = 8 × 2 = 72 - 48 = 78 - 25 = 5 × 4 = 49 - 20 = 37 + 46 = 2 × 3 = 25 + 33 = 48 + 26 = 　 　 　 　 　 　 　 36 - 27 = 　 　 　 　 　 　 　 18 + 52 = 85 - 46 = 43 + 29 = 50 - 38 = 2 单元 1 　 第 3 课时　 练习课(教材 P4) 2 年级 下 R 42 + 30 = 34 + 44 = 59 + 21 = 7 × 7 = 80 - 25 = 63 + 30 = 56 + 37 = 82 - 40 = 8 × 5 = 93 - 38 = 72 + 8 = 6 × 9 = 70 - 16 = 60 - 25 = 5 × 9 = 4 × 6 = 48 - 19 = 76 - 30 = 3 × 6 = 42 + 29 = 43 - 18 = 5 × 2 = 42 - 20 = 77 - 48 = 4 × 3 = 9 × 8 = 16 + 26 = 82 - 36 = 8 × 8 = 31 - 22 = 27 + 53 = 3 × 8 = 22 - 8 = 45 - 26 = 56 + 20 = 63 - 30 = 33 - 18 = 7 × 4 = 9 × 4 = 75 - 39 = 35 + 48 = 　 　 　 　 　 　 　 86 - 27 = 　 　 　 　 　 　 　 43 + 29 = 45 + 24 + 19 = 75 - 32 - 26 = 63 - 48 + 35 = 3 单元 1 　 第 1 单元计算易错专练　 2 年级 下 R 1. 直接写出得数。 40 + 30 = 30 + 9 = 35 + 21 = 7 × 9 = 55 + 5 = 8 × 8 = 14 + 8 = 72 - 12 = 62 + 7 = 2 × 8 = 43 + 8 = 7 × 8 = 70 - 12 = 5 × 5 = 55 + 25 = 5 × 7 = 32 - 8 = 39 - 26 = 44 - 38 = 6 × 2 = 40 - 22 = 4 × 3 = 42 - 38 = 36 + 27 = 2. 在( 　 　 )里填上合适的数。 34 + ( ) = 60　 　 　 70 - ( ) = 26　 　 　 53 + ( ) = 82 74 - ( ) = 38 ( ) - 32 = 48 ( ) + 29 = 56 ( ) + 39 = 52 83 - ( ) = 45 66 - ( ) = 48 3. 用竖式计算。 68 + 25 = 　 　 　 　 　 　 　 46 - 27 = 　 　 　 　 　 　 　 71 - 49 = 66 + 18 = 18 + 42