《2025年灵机一动口算心算四年级数学上册苏教版》

1
19 + 81 = 100
15 × 5 = 75
70 ÷ 2 = 35
15 × 2 = 30
53 - 32 = 21
35 + 44 = 79
400 + 700 = 1100
80 - 69 = 11
110 - 70 = 40
81 + 27 = 108
80 - 66 = 14
22 + 49 = 71
94 ÷ 47 = 2
73 - 24 = 49
240 ÷ 30 = 8

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。我们可以直接进行计算。
答案：
$19 + 81 = 100$
$15 × 5 = 75$
$70 ÷ 2 = 35$
$15 × 2 = 30$
$53 - 32 = 21$
$35 + 44 = 79$
$400 + 700 = 1100$
$80 - 69 = 11$
$110 - 70 = 40$
$81 + 27 = 108$
$80 - 66 = 14$
$22 + 49 = 71$
$94 ÷ 47 = 2$
$73 - 24 = 49$
$240 ÷ 30 = 8$

2
90 ÷ 15 =
25 + 53 =
42 ÷ 14 =
63 - 29 =
48 ÷ 3 =
300 + 900 =
80 - 56 =
48 ÷ 16 =
700 + 600 =
450 ÷ 50 =
11 × 80 =
22 × 400 =
19 × 6 =
210 ÷ 70 =
54 + 80 =

答案： 解析：这些题目都是基础的数学运算题目，包括除法、加法、减法和乘法。
答案：
$90 ÷ 15 = 6$
$25 + 53 = 78$
$42 ÷ 14 = 3$
$63 - 29 = 34$
$48 ÷ 3 = 16$
$300 + 900 = 1200$
$80 - 56 = 24$
$48 ÷ 16 = 3$
$700 + 600 = 1300$
$450 ÷ 50 = 9$
$11 × 80 = 880$
$22 × 400 = 8800$
$19 × 6 = 114$
$210 ÷ 70 = 3$
$54 + 80 = 134$

3
30 + 800 = 830
35 + 49 = 84
68 ÷ 4 = 17
73 - 34 = 39
140 ÷ 2 = 70
460 ÷ 23 = 20
67 - 49 = 18
16 × 4 = 64
700 + 260 = 960
45 × 20 = 900
48 + 47 = 95
5 × 65 = 325
34 + 97 = 131
72 × 8 = 576
3 × 24 = 72

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。我们按照题目顺序，逐一进行计算。
答案：
$30 + 800 = 830$
$35 + 49 = 84$
$68 ÷ 4 = 17$
$73 - 34 = 39$
$140 ÷ 2 = 70$
$460 ÷ 23 = 20$
$67 - 49 = 18$
$16 × 4 = 64$
$700 + 260 = 960$
$45 × 20 = 900$
$48 + 47 = 95$
$5 × 65 = 325$
$34 + 97 = 131$
$72 × 8 = 576$
$3 × 24 = 72$