《2025年速算天地数学口算心算六年级上册苏教版》

把下列百分数化成小数或整数。
🦋42% = 0.42
🦋20.4% = 0.204
1.23% = 0.0123
0.04% = 0.0004
248% = 2.48
1000% = 10
70% = 0.7
48% = 0.48
0.4% = 0.004
240% = 2.4
15% = 0.15
300% = 3
100% = 1
5% = 0.05
2000% = 20
2.5% = 0.025
6.5% = 0.065
25% = 0.25
650% = 6.5
17.7% = 0.177
27.5% = 0.275
0.1% = 0.001
170% = 1.7
110% = 1.1
0.25% = 0.0025
4% = 0.04
64.8% = 0.648
5.75% = 0.0575
200% = 2
99% = 0.99
40% = 0.4
28.5% = 0.285
106% = 1.06
50.5% = 0.505

答案： 解析：本题考查百分数和小数之间的换算，具体方法是将百分号前面的数除以100，也就是将小数点向左移动两位。
答案：
42% = 0.42，
20.4% = 0.204，
1.23% = 0.0123，
0.04% = 0.0004，
248% = 2.48，
1000% = 10，
70% = 0.7，
48% = 0.48，
0.4% = 0.004，
240% = 2.4，
15% = 0.15，
300% = 3，
100% = 1，
5% = 0.05，
2000% = 20，
2.5% = 0.025，
6.5% = 0.065，
25% = 0.25，
650% = 6.5，
17.7% = 0.177，
27.5% = 0.275，
0.1% = 0.001，
170% = 1.7，
110% = 1.1，
0.25% = 0.0025，
4% = 0.04，
64.8% = 0.648，
5.75% = 0.0575，
200% = 2，
99% = 0.99，
40% = 0.4，
28.5% = 0.285，
106% = 1.06，
50.5% = 0.505。