一、口算。
3 + 9 =
12 - 8 =
3 + 7 + 6 =
15 - 9 =
6 + 9 =
11 - 7 + 8 =
7 + 7 =
8 - 8 =
9 + 6 - 7 =
15 - 7 =
7 + 4 =
10 + 8 - 9 =
5 + 7 =
18 - 10 =
9 + 5 + 4 =
11 - 7 =
7 + 9 =
8 + 7 - 9 =
18 + 1 =
11 - 2 =
5 + 8 + 4 =
13 - 8 =
13 + 5 =
13 - 4 - 4 =
6 + 5 =
8 + 3 =
15 - 6 + 8 =
17 - 9 =
10 - 3 =
19 - 9 - 9 =
答案
一、12 4 16
6 15 12
14 0 8
8 11 9
12 8 18
4 16 6
19 9 17
5 18 5
11 11 17
8 7 1
6 15 12
14 0 8
8 11 9
12 8 18
4 16 6
19 9 17
5 18 5
11 11 17
8 7 1
二、在$◯$里填“>”“<”或“=”。
16 - 9$◯$8
18 - 9$◯$9
12 - 8$◯$14 - 9
14 - 8$◯$6
7 + 6$◯$12
13 - 7$◯$13 - 6
8 + 5$◯$11
15 - 8$◯$7
12 - 4$◯$19 - 10
16 - 9$◯$8
18 - 9$◯$9
12 - 8$◯$14 - 9
14 - 8$◯$6
7 + 6$◯$12
13 - 7$◯$13 - 6
8 + 5$◯$11
15 - 8$◯$7
12 - 4$◯$19 - 10
答案
二、< = <
= > <
> = <
= > <
> = <
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