《2025年速算天地数学口算心算五年级上册苏教版》

🦋1÷0.1=10
1×2=2
2÷0.5=4
2×2=4
3÷0.5=6
3×2=6
0.1÷0.5=0.2
0.1×2=0.2
1÷0.25=4
1×4=4
2÷0.25=8
2×4=8
20÷0.25=80
20×4=80
5÷0.25=20
5×4=20
0.1÷0.25=0.4
0.1×4=0.4
10÷0.5=20
10×2=20
🦋0.48÷0.8=0.6
0.1÷0.1=1
0÷0.49=0
0.49÷0.49=1
0.26÷0.1=2.6
7.2×0.2=1.44
0.36×2=0.72
1.1×0.8=0.88
1÷0.01=100
0.4×1.2=0.48
2.5×0.4=1
0.25×40=10
0.81÷0.9=0.9
0.38÷0.2=1.9
0.25×0.4=0.1
0.1×0.1=0.01
0.2÷0.02=10
0.8÷1.6=0.5
3.8÷1.9=2
0.36×0.2=0.072

答案： 解析：本题主要考查了小数乘除法的口算能力。
答案：
$1 ÷ 0.1 = 10$
$1 × 2 = 2$
$2 ÷ 0.5 = 4$
$2 × 2 = 4$
$3 ÷ 0.5 = 6$
$3 × 2 = 6$
$0.1 ÷ 0.5 = 0.2$
$0.1 × 2 = 0.2$
$1 ÷ 0.25 = 4$
$1 × 4 = 4$
$2 ÷ 0.25 = 8$
$2 × 4 = 8$
$20 ÷ 0.25 = 80$
$20 × 4 = 80$
$5 ÷ 0.25 = 20$
$5 × 4 = 20$
$0.1 ÷ 0.25 = 0.4$
$0.1 × 4 = 0.4$
$10 ÷ 0.5 = 20$
$10 × 2 = 20$
$0.48 ÷ 0.8 = 0.6$
$0.1 ÷ 0.1 = 1$
$0 ÷ 0.49 = 0$
$0.49 ÷ 0.49 = 1$
$0.26 ÷ 0.1 = 2.6$
$7.2 × 0.2 = 1.44$
$0.36 × 2 = 0.72$
$1.1 × 0.8 = 0.88$
$1 ÷ 0.01 = 100$
$0.4 × 1.2 = 0.48$
$2.5 × 0.4 = 1$
$0.25 × 40 = 10$
$0.81 ÷ 0.9 = 0.9$
$0.38 ÷ 0.2 = 1.9$
$0.25 × 0.4 = 0.1$
$0.1 × 0.1 = 0.01$
$0.2 ÷ 0.02 = 10$
$0.8 ÷ 1.6 = 0.5$
$3.8 ÷ 1.9 = 2$
$0.36 × 0.2 = 0.072$