一年级数学口算20以内的连加连减混合 (1)1 + 14 + 1 = (2)9 - 6 - 1= (3)1 + 15 + 3 = (4)4 + 4 + 6 = (5)10 + 1 + 6 = (6)17 - 13 - 3= (7)6 - 4 - 1= (8)1 + 4 + 4 = (9)10 + 4 + 5 = (10)1 + 2 + 5 = (11)9 + 1 + 6 = (12)4 + 1 + 10 = (13)2 + 7 + 10 = (14)9 - 7 - 1= (15)5 + 4 + 3 = 20以内的连加连减混合参考答案 (1)1 + 14 + 1 =16 (2)9 - 6 - 1=2 (3)1 + 15 + 3 =19 (4)4 + 4 + 6 =14 (5)10 + 1 + 6 =17 (6)17 - 13 - 3=1 (7)6 - 4 - 1=1 (8)1 + 4 + 4 =9 (9)10 + 4 + 5 =19 (10)1 + 2 + 5 =8 (11)9 + 1 + 6 =16 (12)4 + 1 + 10 =15 (13)2 + 7 + 10 =19 (14)9 - 7 - 1=1 (15)5 + 4 + 3 =12 |