《2025年速算天地数学口算心算二年级上册苏教版》

12 + 4 = 16
25 ÷ 5 = 5
12 ÷ 4 = 3
5 + 5 = 10
10 + 5 = 15
16 + 4 = 20
10 ÷ 5 = 2
16 ÷ 4 = 4
2 × 1 = 2
5 × 1 = 5
5 × 5 = 25
5 ÷ 1 = 5
20 ÷ 4 = 5
12 ÷ 2 = 6
3 × 3 = 9
12 - 6 = 6
9 ÷ 3 = 3
18 ÷ 3 = 6
6 ÷ 2 = 3
15 ÷ 5 = 3
4 ÷ 1 = 4
15 + 5 = 20
18 ÷ 6 = 3
4 × 5 = 20
4 × 4 = 16
20 - 5 = 15
6 + 6 = 12
6 × 4 = 24

答案： 解析：这些题目都是基础的数学运算题目，包括加法、减法、乘法和除法。根据二年级学生的运算能力，可以直接计算出结果。
答案：
12 + 4 = 16
25 ÷ 5 = 5
12 ÷ 4 = 3
5 + 5 = 10
10 + 5 = 15
16 + 4 = 20
10 ÷ 5 = 2
16 ÷ 4 = 4
2 × 1 = 2
5 × 1 = 5
5 × 5 = 25
5 ÷ 1 = 5
20 ÷ 4 = 5
12 ÷ 2 = 6
3 × 3 = 9
12 - 6 = 6
9 ÷ 3 = 3
18 ÷ 3 = 6
6 ÷ 2 = 3
15 ÷ 5 = 3
4 ÷ 1 = 4
15 + 5 = 20
18 ÷ 6 = 3
4 × 5 = 20
4 × 4 = 16
20 - 5 = 15
6 + 6 = 12
6 × 4 = 24