《2025年灵机一动口算心算四年级数学上册苏教版》

1
2000 + 400 = 2400
55 + 29 = 84
63 - 29 = 34
5000 + 3000 = 8000
540 ÷ 90 = 6
110 × 4 = 440
5000 + 300 = 5300
32 ÷ 16 = 2
2000 + 900 = 2900
32 × 10 = 320
32 × 20 = 640
9700 - 700 = 9000
2900 - 900 = 2000
43 + 16 = 59
21 + 59 = 80

答案： 2000 + 400 = 2400
55 + 29 = 84
63 - 29 = 34
5000 + 3000 = 8000
540 ÷ 90 = 6
110 × 4 = 440
5000 + 300 = 5300
32 ÷ 16 = 2
2000 + 900 = 2900
32 × 10 = 320
32 × 20 = 640
9700 - 700 = 9000
2900 - 900 = 2000
43 + 16 = 59
21 + 59 = 80

2
5000 - 4000 =
7000 + 800 =
4000 + 3000 =
3600 - 3000 =
1000 + 1000 =
3700 - 3000 =
4200 - 4000 =
1000 - 500 =
4000 + 900 =
8600 - 8000 =
7200 - 200 =
4400 - 4000 =
3200 - 200 =
6000 + 800 =
3300 - 3000 =

答案： 解析：这些题目都是基础的加减法口算题，主要考查学生的基本运算能力。
答案：
5000 - 4000 = 1000
7000 + 800 = 7800
4000 + 3000 = 7000
3600 - 3000 = 600
1000 + 1000 = 2000
3700 - 3000 = 700
4200 - 4000 = 200
1000 - 500 = 500
4000 + 900 = 4900
8600 - 8000 = 600
7200 - 200 = 7000
4400 - 4000 = 400
3200 - 200 = 3000
6000 + 800 = 6800
3300 - 3000 = 300

3
210 ÷ 70 = 3
55 + 43 = 98
240 × 2 = 480
360 ÷ 90 = 4
53 + 45 = 98
110 × 9 = 990
53 + 21 = 74
90 - 56 = 34
210 ÷ 30 = 7
85 - 27 = 58
350 ÷ 70 = 5
130 × 3 = 390
23 × 20 = 460
70 - 16 = 54
81 - 33 = 48

答案： 3
210 ÷ 70 = 3
55 + 43 = 98
240 × 2 = 480
360 ÷ 90 = 4
53 + 45 = 98
110 × 9 = 990
53 + 21 = 74
90 - 56 = 34
210 ÷ 30 = 7
85 - 27 = 58
350 ÷ 70 = 5
130 × 3 = 390
23 × 20 = 460
70 - 16 = 54
81 - 33 = 48