第六单元计算专项01：小数加减法口算-2025-2026学年四年级数学下册人教版

2025-2026学年四年级数学下册人教版 第六单元计算专项01：小数加减法口算 日期： 用时： 评价： 一、一位小数加减法 (1)0.6 + 0.3 = (2)1.5 - 0.7 = (3)2.4 + 1.2 = (4)3.8 - 2.5 = (5)0.9 + 0.8 = (6)5.1 - 3.4 = (7)0.7 + 1.3 = (8)4.6 - 0.9 = (9)1.8 + 0.5 = (10)6.2 - 2.8 = (11)0.4 + 0.5 = (12)2.3 - 1.1 = (13)1.7 + 0.2 = (14)4.9 - 3.6 = (15)0.8 + 0.1 = (16)6.2 - 0.5 = (17)3.5 + 2.5 = (18)7.8 - 4.3 = (19)0.9 + 1.2 = (20)5.1 - 2.7 = 二、两位小数加减法 (1)0.35 + 0.25 = (2)1.48 - 0.18 = (3)0.62 + 0.38 = (4)2.75 - 1.5 = (5)0.45 + 0.55 = (6)3.69 - 2.3 = (7)0.8 + 0.12 = (8)5.24 - 0.24 = (9)1.05 + 0.95 = (10)4.3 - 1.05 = (11)0.23 + 0.17 = (12)1.56 - 0.36 = (13)0.78 + 0.22 = (14)3.45 - 2.15 = (15)0.52 + 0.48 = (16)2.89 - 1.59 = (17)0.6 + 0.35 = (18)4.75 - 0.75 = (19)1.08 + 0.92 = (20)5.3 - 2.05 = 三、整数与小数加减法 (1)3 + 0.5 = (2)7 - 2.4 = (3)8 + 1.6 = (4)10 - 0.8 = (5)5 + 0.35 = (6)9 - 3.7 = (7)2 + 4.2 = (8)6 - 0.15 = (9)12 + 0.9 = (10)15 - 5.5 = (11)4 + 0.6 = (12)8 - 3.5 = (13)6 + 2.4 = (14)12 - 0.5 = (15)7 + 0.25 = (16)11 - 4.8 = (17)3 + 5.7 = (18)9 - 0.3 = (19)15 + 0.8 = (20)20 - 6.6 = 四、一位与两位小数混合加减法 (1)0.8 + 0.15 = (2)2.5 - 0.36 = (3)1.25 + 0.7 = (4)3.6 - 1.45 = (5)0.48 + 0.5 = (6)5.2 - 0.8 = (7)1.3 + 0.65 = (8)4.75 - 2.3 = (9)0.92 + 0.08 = (10)6.1 - 0.55 = (11)0.7 + 0.25 = (12)3.2 - 0.48 = (13)1.45 + 0.5 = (14)5.8 - 1.35 = (15)0.36 + 0.6 = (16)6.4 - 0.7 = (17)2.1 + 0.85 = (18)4.95 - 2.5 = (19)0.88 + 0.1 = (20)7.3 - 0.65 = 五、综合练习 (1)1.2 + 0.8 = (2)3.5 - 1.5 = (3)0.25 + 0.75 = (4)5.4 - 0.4 = (5)2.1 + 3.9 = (6)7.8 - 3.3 = (7)0.6 + 0.45 = (8)9.25 - 4.25 = (9)1.0 + 0.99 = (10)8.6 - 0.06 = (11)1.5 + 0.5 = (12)4.8 - 2.8 = (13)0.3 + 0.7 = (14)6.1 - 0.1 = (15)0.45 + 0.55 = (16)8.3 - 3.3 = (17)1.25 + 0.75 = (18)5.6 - 2.6 = (19)2 + 0.3 = (20)9 - 4.5 = 六、分数改写成小数再计算 (1) + = (2) - = (3) + = (4) - = (5) + = (6) - = (7) + 0.4 = (8)0.6 - = (9) + = (10) - = (11) + = (12)0.35 - = (13) + = (14) - 0.6 = (15) + 0.5 = (16) - = (17) + 0.08 = (18)0.9 - = (19) + = (20) - 0.45 = 第 1 页 共 1 页 学科网（北京）股份有限公司 参考答案 一、一位小数加减法 (1)0.9 (2) 0.8 (3) 3.6 (4) 1.3 (5) 1.7 (6) 1.7 (7) 2 (8) 3.7 (9) 2.3 (10) 3.4 (11)0.9 (12) 1.2 (13) 1.9 (14) 1.3 (15) 0.9 (16) 5.7 (17) 6 (18) 3.5 (19) 2.1 (20) 2.4 二、两位小数加减法 (1)0.6 (2) 1.3 (3) 1 (4) 1.25 (5) 1 (6) 1.39 (7) 0.92 (8) 5 (9) 2 (10) 3.25 (11)0.4 (12) 1.2 (13) 1 (14) 1.3 (15) 1 (16) 1.3 (17) 0.95 (18) 4 (19) 2 (20) 3.25 三、整数与小数加减法 (1)3.5 (2) 4.6 (3) 9.6 (4) 9.2 (5) 5.35 (6) 5.3 (7) 6.2 (8) 5.85 (9) 12.9 (10) 9.5 (11)4.6 (12) 4.5 (13) 8.4 (14) 11.5 (15) 7.25 (16) 6.2 (17) 8.7 (18) 8.7 (19) 15.8 (20) 13.4 四、一位与两位小数混合加减法 (1)0.95 (2) 2.14 (3) 1.95 (4) 2.15 (5) 0.98 (6) 4.4 (7) 1.95 (8) 2.45 (9) 1 (10) 5.55 (11)0.95 (12) 2.72 (13) 1.95 (14) 4.45 (15) 0.96 (16) 5.7 (17) 2.95 (18) 2.45 (19) 0.98 (20) 6.65 五、综合练习 (1)2 (2) 2 (3) 1 (4) 5 (5) 6 (6) 4.5 (7) 1.05 (8) 5 (9) 1.99 (10) 8.54 (11)2 (12) 2 (13) 1 (14) 6 (15) 1 (16) 5 (17) 2 (18) 3 (19) 2.3 (20) 4.5 六、分数改写成小数再计算 (1) 0.8 (2)0.5 (3)0.26 (4)0.42 (5)0.13 (6) 0.43 (7)1.3 (8)0.3 (9)0.5 (10) 0.3 (11)0.85 (12) 0.15 (13) 0.44 (14)0.3 (15) 0.75 (16)0.69 (17)0.14 (18) 0.15 (19)0.92 (20) 0.1 $