《2025年灵机一动口算心算四年级数学上册苏教版》

25×40=1000
81÷9=9
12+77=89
61×4=244
168÷8=21
90-42=48
81-55=26
125×8=1000
9×70=630
900÷9=100
4×32=128
75÷15=5
64÷16=4
8×35=280
990÷9=110
210÷70=3
32÷16=2
45÷3=15
11×40=440
360÷90=4
53+45=98
110×9=990
92÷2=46
350÷70=5
80-69=11
23×20=460
70-16=54
90÷5=18
140×2=280
17+48=65
85÷5=17
11×20=220
330×2=660
28÷14=2
90÷18=5
11×60=660
13×20=260
67+18=85
70-14=56
29×3=87
34÷2=17
55+43=98
240×2=480
70÷35=2
95-29=66

答案： 解析：这些题目都是基础的数学运算题目，包括乘法、除法、加法和减法。
接下来，我们按照题目顺序进行计算：
$25 × 40 = 1000$
$81 ÷ 9 = 9$
$12 + 77 = 89$
$61 × 4 = 244$
$168 ÷ 8 = 21$
$90 - 42 = 48$
$81 - 55 = 26$
$125 × 8 = 1000$
$9 × 70 = 630$
$900 ÷ 9 = 100$
$4 × 32 = 128$
$75 ÷ 15 = 5$
$64 ÷ 16 = 4$
$8 × 35 = 280$
$990 ÷ 9 = 110$
$210 ÷ 70 = 3$
$32 ÷ 16 = 2$
$45 ÷ 3 = 15$
$11 × 40 = 440$
$360 ÷ 90 = 4$
$53 + 45 = 98$
$110 × 9 = 990$
$92 ÷ 2 = 46$
$350 ÷ 70 = 5$
$80 - 69 = 11$
$23 × 20 = 460$
$70 - 16 = 54$
$90 ÷ 5 = 18$
$140 × 2 = 280$
$17 + 48 = 65$
$85 ÷ 5 = 17$
$11 × 20 = 220$
$330 × 2 = 660$
$28 ÷ 14 = 2$
$90 ÷ 18 = 5$
$11 × 60 = 660$
$13 × 20 = 260$
$67 + 18 = 85$
$70 - 14 = 56$
$29 × 3 = 87$
$34 ÷ 2 = 17$
$55 + 43 = 98$
$240 × 2 = 480$
$70 ÷ 35 = 2$
$95 - 29 = 66$