1. 直接写出得数。(15分)
5 - 2 =
3 + 7 =
3 + 4 =
5 - 2 =
3
7 - 3 = 4
8 - 2 = 6
3 + 6 = 9
10 - 8 + 5 = 7
3 + 7 =
10
6 - 6 = 0
5 + 0 = 5
7 + 2 = 9
7 + 2 - 8 = 1
3 + 4 =
7
6 + 10 = 16
9 + 1 = 10
14 - 10 = 4
10 - 6 + 5 = 9
答案：5 - 2 = 3
7 - 3 = 4
8 - 2 = 6
3 + 6 = 9
10 - 8 + 5 = 7
3 + 7 = 10
6 - 6 = 0
5 + 0 = 5
7 + 2 = 9
7 + 2 - 8 = 1
3 + 4 = 7
6 + 10 = 16
9 + 1 = 10
14 - 10 = 4
10 - 6 + 5 = 9
7 - 3 = 4
8 - 2 = 6
3 + 6 = 9
10 - 8 + 5 = 7
3 + 7 = 10
6 - 6 = 0
5 + 0 = 5
7 + 2 = 9
7 + 2 - 8 = 1
3 + 4 = 7
6 + 10 = 16
9 + 1 = 10
14 - 10 = 4
10 - 6 + 5 = 9
解析：
5 - 2 = 3
7 - 3 = 4
8 - 2 = 6
3 + 6 = 9
10 - 8 + 5 = 7
3 + 7 = 10
6 - 6 = 0
5 + 0 = 5
7 + 2 = 9
7 + 2 - 8 = 1
3 + 4 = 7
6 + 10 = 16
9 + 1 = 10
14 - 10 = 4
10 - 6 + 5 = 9
7 - 3 = 4
8 - 2 = 6
3 + 6 = 9
10 - 8 + 5 = 7
3 + 7 = 10
6 - 6 = 0
5 + 0 = 5
7 + 2 = 9
7 + 2 - 8 = 1
3 + 4 = 7
6 + 10 = 16
9 + 1 = 10
14 - 10 = 4
10 - 6 + 5 = 9
2. 在$◯$里填“＞”或“＜”,在$□$里填合适的数。(8分)
18$◯$
10 + 2$◯$
15 -$□$
18$◯$
＞
8 10 + 6$◯$＞
11 + 4 19 - 10$◯$＜
19 - 910 + 2$◯$
＞
10 - 1 2 + 8 = $□$1
+ 9 6 -$□$2
= 8 -$□$4
15 -$□$
5
＞ 9 4 + 3 ＞ 5 +$□$1
（部分答案不唯一）答案：＞ ＞ ＜ ＞ 1 2 4 5 1（部分答案不唯一）
解析：
18＞8
10+6＞11+4
19-10＜19-9
10+2＞10-1
2+8=1+9
6-2=8-4
15-5＞9
4+3＞5+1
10+6＞11+4
19-10＜19-9
10+2＞10-1
2+8=1+9
6-2=8-4
15-5＞9
4+3＞5+1
3. 看图写数。
(
(
12
) (15
) (16
) (18
)答案：12 15 16 18
(1) 9,10,(
(2) 19,(
11
),12,(13
),(14
)。(2) 19,(
18
),(17
),16,(15
)。答案：（1）11 13 14 （2）18 17 15
解析：
(1) 11 13 14
(2) 18 17 15
(2) 18 17 15
5. (1) 1个十和8个一合起来是(
(2) 16里面有(
(3) 比13大,比17小的数有(
(4) 11前面一个数是(
18
)。(2) 16里面有(
6
)个一和(1
)个十。(3) 比13大,比17小的数有(
3
)个。(4) 11前面一个数是(
10
),后面一个数是(12
),14和16之间的数是(15
),与18相邻的两个数是(17
)和(19
)。答案：（1）18 （2）6 1 （3）3 （4）10 12 15 17 19