第5单元 加与减(二)-【优佳好】2023-2024学年一年级下册数学口算计算能力提升（北师大版）

单元五 　 第 1 课时　 小兔请客(1) 1 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　20 + 30 = 60 - 30 = 70 + 20 = 50 + 50 = 80 - 50 = 20 + 50 = 70 - 30 = 50 - 20 = 90 - 60 = 40 + 40 = 30 + 60 = 50 + 30 = 30 + 40 = 80 - 20 = 60 - 40 = 90 - 50 = 90 - 40 = 70 - 20 = 90 - 30 = 50 + 10 = 80 - 30 = 90 + 10 = 20 + 60 = 60 - 20 = 40 - 40 = 50 + 40 = 50 - 40 = 80 + 10 = 80 - 10 = 20 + 20 = 30 - 30 = 90 - 20 = 30 + 30 = 70 - 40 = 90 - 80 = 70 - 10 = 20 + 40 = 80 - 70 = 40 + 60 = 70 - 50 = 70 - 40 - 20 = 100 - 40 + 20 = 50 + 30 - 40 = 90 - 60 - 20 = 30 + 20 - 10 = 40 + 50 - 60 = 80 - 20 - 30 = 30 + 10 + 50 = 　 　 　 　 　 　 　 　 　 　 　 　 92 单元五 　 第 2 课时　 小兔请客(2) 1 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　90 - 30 = 70 - 60 = 30 + 50 = 20 - 10 = 10 + 30 = 50 - 10 = 60 - 30 = 40 - 30 = 70 - 10 = 40 - 10 = 70 - 30 = 30 + 60 = 60 - 20 = 80 - 40 = 30 + 40 = 90 - 60 = 10 + 50 = 70 - 50 = 20 + 30 = 60 + 10 = 20 + 20 = 50 - 40 = 50 - 20 = 70 - 20 = 40 + 40 = 60 + 20 = 80 - 60 = 70 + 20 = 60 - 60 = 80 - 50 = 80 - 30 = 30 + 30 = 70 - 70 = 70 - 40 = 20 + 80 = 40 - 40 = 50 - 50 = 50 - 30 = 10 + 90 = 80 + 10 = 10 + 30 + 50 = 80 - 40 - 20 = 10 + 40 + 20 = 60 - 20 - 20 = 80 - 50 - 20 = 20 + 30 + 40 = 30 + 30 + 20 = 80 - 30 - 40 = 　 　 　 　 　 　 　 　 　 　 　 　 03 单元五 　 第 3 课时　 采松果(1) 1 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　20 + 6 = 6 + 7 = 2 + 70 = 4 + 20 = 3 + 50 = 20 + 8 = 24 - 3 = 31 + 3 = 44 + 4 = 88 - 6 = 29 - 7 = 82 + 4 = 76 - 2 = 86 + 3 = 30 + 2 = 58 - 3 = 62 + 5 = 37 - 4 = 36 - 1 = 35 - 4 = 36 - 3 = 22 + 5 = 28 - 6 = 27 - 3 = 40 + 3 = 56 - 3 = 48 - 7 = 73 + 5 = 27 - 6 = 52 + 3 = 39 - 4 = 59 - 6 = 52 + 5 = 49 - 5 = 66 + 3 = 42 + 7 = 34 + 3 = 39 - 8 = 21 + 7 = 33 + 6 = 62 + 6 = 44 + 3 = 43 + 5 = 12 + 6 = 68 - 3 = 68 - 6 = 5 + 61 = 41 + 7 = 　 　 　 　 　 　 　 　 　 　 　 　 13 单元五 　 第 4 课时　 采松果(2) 1 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　52 + 7 = 76 - 2 = 70 + 20 = 99 - 7 = 6 + 21 = 76 + 3 = 61 + 7 = 85 - 4 = 30 + 50 = 43 + 5 = 66 - 4 = 61 + 8 = 42 + 7 = 84 - 2 = 67 -