《2025年速算天地数学口算心算五年级上册苏教版》

🦋100×0.8=80
0.2×0.36=0.072
0.38÷1.9=0.2
1-0.14=0.86
0.3+7.7=8
0.16÷0.4=0.4
0.48×0.2=0.096
4.1-2.5=1.6
14.7÷7=2.1
0.64÷0.16=4
0.26×0.3=0.078
0.75÷2.5=0.3
0.78+0.03=0.81
1.5×4=6
0.52÷0.13=4
5.4÷0.3=18
2.12+8=10.12
0.35÷0.1=3.5
2.7×100=270
0÷7.3=0
🦋0.4×0.42=0.168
0.72÷0.18=4
2.4×0.5=1.2
4.7÷0.47=10
0.45÷9=0.05
3.2×0.7=2.24
6.5-3.1=3.4
14.7÷0.7=21
0.23×1000=230
0.8+0.18=0.98
10-7.3=2.7
0.7×0.12=0.084
2÷0.05=40
8.1÷0.9=9
1.93-1=0.93
0.28×0.2=0.056
3.6÷9=0.4
4.2÷2=2.1
1.4×0.2=0.28
0.16×0.5=0.08

答案： 解析：这些题目都是基础的数学运算，包括乘法、除法、加法和减法，主要考查学生的速算能力。
答案：
$100 × 0.8 = 80$
$0.2 × 0.36 = 0.072$
$0.38 ÷ 1.9 = 0.2$
$1 - 0.14 = 0.86$
$0.3 + 7.7 = 8$
$0.16 ÷ 0.4 = 0.4$
$0.48 × 0.2 = 0.096$
$4.1 - 2.5 = 1.6$
$14.7 ÷ 7 = 2.1$
$0.64 ÷ 0.16 = 4$
$0.26 × 0.3 = 0.078$
$0.75 ÷ 2.5 = 0.3$
$0.78 + 0.03 = 0.81$
$1.5 × 4 = 6$
$0.52 ÷ 0.13 = 4$
$5.4 ÷ 0.3 = 18$
$2.12 + 8 = 10.12$
$0.35 ÷ 0.1 = 3.5$
$2.7 × 100 = 270$
$0 ÷ 7.3 = 0$
$0.4 × 0.42 = 0.168$
$0.72 ÷ 0.18 = 4$
$2.4 × 0.5 = 1.2$
$4.7 ÷ 0.47 = 10$
$0.45 ÷ 9 = 0.05$
$3.2 × 0.7 = 2.24$
$6.5 - 3.1 = 3.4$
$14.7 ÷ 0.7 = 21$
$0.23 × 1000 = 230$
$0.8 + 0.18 = 0.98$
$10 - 7.3 = 2.7$
$0.7 × 0.12 = 0.084$
$2 ÷ 0.05 = 40$
$8.1 ÷ 0.9 = 9$
$1.93 - 1 = 0.93$
$0.28 × 0.2 = 0.056$
$3.6 ÷ 9 = 0.4$
$4.2 ÷ 2 = 2.1$
$1.4 × 0.2 = 0.28$
$0.16 × 0.5 = 0.08$