第4单元 表内除法（二）-【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 4 　 第 1 课时　 用 7、8 的乘法口诀求商(教材 P38) 2 年级 下 R 5 × 8 = 40 ÷ 5 = 40 ÷ 8 = 35 ÷ 5 = 16 ÷ 2 = 16 ÷ 4 = 21 ÷ 3 = 32 ÷ 8 = 49 ÷ 7 = 5 × 7 = 7 × 4 = 28 ÷ 4 = 28 ÷ 7 = 16 ÷ 8 = 35 ÷ 7 = 21 ÷ 7 = 3 × 7 = 7 ÷ 7 = 14 ÷ 7 = 42 ÷ 7 = 7 × 8 = 56 ÷ 7 = 56 ÷ 8 = 42 ÷ 6 = 8 ÷ 8 = 14 ÷ 2 = 8 × 8 = 64 ÷ 8 = 18 ÷ 3 = 48 ÷ 6 = 3 × 8 = 24 ÷ 3 = 24 ÷ 8 = 42 ÷ 7 = 48 ÷ 8 = 24 ÷ 6 = 8 ÷ 1 = 2 × 8 = 8 × 4 = 32 ÷ 4 = 48 + 39 = 　 　 　 　 　 　 80 - 36 = 　 　 　 　 　 　 48 - 34 + 27 = 37 + 52 = 51 - 28 = 54 + 27 - 35 = 22 单元 4 　 第 2 课时　 用 9 的乘法口诀求商(教材 P39) 2 年级 下 R 9 × 3 = 27 ÷ 3 = 27 ÷ 9 = 18 ÷ 9 = 64 ÷ 8 = 81 ÷ 9 = 35 ÷ 5 = 24 ÷ 8 = 15 ÷ 5 = 72 ÷ 8 = 5 × 9 = 45 ÷ 5 = 45 ÷ 9 = 36 ÷ 4 = 63 ÷ 9 = 16 ÷ 8 = 24 ÷ 3 = 9 ÷ 1 = 21 ÷ 7 = 40 ÷ 5 = 4 × 9 = 28 ÷ 4 = 36 ÷ 9 = 54 ÷ 6 = 18 ÷ 2 = 48 ÷ 8 = 9 ÷ 9 = 48 ÷ 6 = 64 ÷ 8 = 54 ÷ 9 = 8 × 7 = 56 ÷ 7 = 56 ÷ 8 = 63 ÷ 7 = 36 ÷ 6 = 42 ÷ 6 = 40 ÷ 8 = 32 ÷ 8 = 49 ÷ 7 = 72 ÷ 9 = 42 + 36 = 　 　 　 　 　 　 50 - 27 = 　 　 　 　 　 　 18 + 36 + 29 = 71 - 46 = 48 + 29 = 70 - 18 - 35 = 32 单元 4 　 第 3 课时　 练习课(教材 P40) 2 年级 下 R 5 × 8 = 40 ÷ 5 = 40 ÷ 8 = 2 × 9 = 14 ÷ 2 = 5 × 9 = 45 ÷ 5 = 21 ÷ 7 = 6 × 8 = 72 ÷ 8 = 6 × 7 = 42 ÷ 6 = 42 ÷ 7 = 16 ÷ 8 = 14 ÷ 7 = 48 ÷ 8 = 8 ÷ 4 = 24 ÷ 6 = 7 × 9 = 45 ÷ 9 = 27 ÷ 3 = 3 × 9 = 27 ÷ 9 = 35 ÷ 5 = 16 ÷ 2 = 35 ÷ 7 = 24 ÷ 4 = 28 ÷ 4 = 54 ÷ 6 = 30 ÷ 5 = 18 ÷ 2 = 7 × 9 = 48 ÷ 6 = 64 ÷ 8 = 18 ÷ 6 = 24 ÷ 8 = 32 ÷ 8 = 18 ÷ 9 = 81 ÷ 9 = 56 ÷ 8 = 32 + 48 = 　 　 　 　 　 　 　 50 - 29 = 　 　 　 　 　 　 　 81 - 37 = 75 - 48 = 43 + 19 = 90 - 56 = 42 单元 4 　 第 4 课时　 解决问题(教材 P42) 2 年级 下 R 24 ÷ 8 = 2 × 5 = 7 ÷ 7 = 72 ÷ 9 = 8 × 3 = 36 ÷ 9 = 42 ÷ 6 = 35 ÷ 5 = 7 × 9 = 18 ÷ 2 = 18 ÷ 9 = 36 ÷ 4 = 6 × 3 = 14 ÷ 2 = 63 ÷ 7 = 40 ÷ 8 = 35 ÷ 7 = 45 ÷ 5 = 9 × 8 = 45 ÷ 9 = 8 × 7 = 72 ÷ 8 = 32 ÷ 8 = 16 ÷ 8 = 28 ÷ 4 = 16 ÷ 2 = 64 ÷ 8 = 72 ÷ 8 = 56 ÷ 8 = 27 ÷ 3 = 6 ÷ 3 = 9 × 3 = 7 × 5 = 56 ÷ 7 = 6 × 9 = 81 ÷ 9 = 28 ÷ 7 = 45 ÷ 9 = 48 ÷ 6 = 12 ÷ 6 = 74 + 17 = 　 　 　 　 　 　 　 60 - 28 = 　 　 　 　 　 　 　 93 - 36 = 38 + 42 - 56 = 27 + 18 + 36 = 72 - 18 - 29 = 52 单元 4 　 第 5 课时　 练习课(教材 P43) 2 年级 下 R 18