一、口算。
35 - 30 = 6 + 40 = 60 + 7 =
5 + 5 = 12 - 7 = 96 - 90 =
17 - 8 = 5 + 60 = 20 + 20 =
7 + 9 = 11 - 8 = 12 - 8 =
85 - 5 = 70 + 10 = 9 + 6 =
30 + 8 = 86 - 80 = 17 - 7 =
30 - 20 = 5 + 50 = 8 + 4 =
6 + 5 = 44 - 4 = 98 - 8 =
15 - 6 = 90 - 50 = 6 + 70 =
20 + 9 = 6 + 8 = 63 - 60 =
35 - 30 = 6 + 40 = 60 + 7 =
5 + 5 = 12 - 7 = 96 - 90 =
17 - 8 = 5 + 60 = 20 + 20 =
7 + 9 = 11 - 8 = 12 - 8 =
85 - 5 = 70 + 10 = 9 + 6 =
30 + 8 = 86 - 80 = 17 - 7 =
30 - 20 = 5 + 50 = 8 + 4 =
6 + 5 = 44 - 4 = 98 - 8 =
15 - 6 = 90 - 50 = 6 + 70 =
20 + 9 = 6 + 8 = 63 - 60 =
答案
一、5 46 67
10 5 6
9 65 40
16 3 4
80 80 15
38 6 10
10 55 12
11 40 90
9 40 76
29 14 3
10 5 6
9 65 40
16 3 4
80 80 15
38 6 10
10 55 12
11 40 90
9 40 76
29 14 3
二、填一填,使每张卡片上算式的得数都相等。

答案
二、39 40 8
2 11 3
8 + 110 - 24 + 9
(最后一行算式答案不唯一)
2 11 3
8 + 110 - 24 + 9
(最后一行算式答案不唯一)
登录