1. 把小数或整数化成百分数。
0.3= (
0.18= (
0.07= (
0.29= (
0.455= (
0.012= (
0.8= (
0.95= (
2= (
1.4= (
1.05= (
3.1= (
0.05= (
0.705= (
1= (
0.35= (
0.3= (
30
)%0.18= (
18
)%0.07= (
7
)%0.29= (
29
)%0.455= (
45.5
)%0.012= (
1.2
)%0.8= (
80
)%0.95= (
95
)%2= (
200
)%1.4= (
140
)%1.05= (
105
)%3.1= (
310
)%0.05= (
5
)%0.705= (
70.5
)%1= (
100
)%0.35= (
35
)%
答案:
解析:本题考查小数化成百分数的方法,需要将每个小数乘以$100\%$来得到对应的百分数。
答案:
0.3 = $30\%$,
0.18 = $18\%$,
0.07 = $7\%$,
0.29 = $29\%$,
0.455 = $45.5\%$,
0.012 = $1.2\%$,
0.8 = $80\%$,
0.95 = $95\%$,
2 = $200\%$,
1.4 = $140\%$,
1.05 = $105\%$,
3.1 = $310\%$,
0.05 = $5\%$,
0.705 = $70.5\%$,
1 = $100\%$,
0.35 = $35\%$。
答案:
0.3 = $30\%$,
0.18 = $18\%$,
0.07 = $7\%$,
0.29 = $29\%$,
0.455 = $45.5\%$,
0.012 = $1.2\%$,
0.8 = $80\%$,
0.95 = $95\%$,
2 = $200\%$,
1.4 = $140\%$,
1.05 = $105\%$,
3.1 = $310\%$,
0.05 = $5\%$,
0.705 = $70.5\%$,
1 = $100\%$,
0.35 = $35\%$。
2. 把百分数化成小数或整数。
4%=
25%=
1%=
10%=
100%=
0.16%=
135%=
260%=
31.5%=
99.9%=
3.2%=
55%=
0.8%=
150%=
400%=
4.8%=
4%=
0.04
25%=
0.25
1%=
0.01
10%=
0.1
100%=
1
0.16%=
0.0016
135%=
1.35
260%=
2.6
31.5%=
0.315
99.9%=
0.999
3.2%=
0.032
55%=
0.55
0.8%=
0.008
150%=
1.5
400%=
4
4.8%=
0.048
答案:
解析:本题考查百分数和小数之间的换算,需要将每个百分数转换为对应的小数或整数。
答案:
4% = 0.04;
25% = 0.25;
1% = 0.01;
10% = 1 ÷ 10 = 0.1;
100% = 100 ÷ 100 = 1;
0.16% = 0.16 ÷ 100 = 0.0016;
135% = 135 ÷ 100 = 1.35;
260% = 260 ÷ 100 = 2.6;
31.5% = 31.5 ÷ 100 = 0.315;
99.9% = 99.9 ÷ 100 = 0.999;
3.2% = 3.2 ÷ 100 = 0.032;
55% = 55 ÷ 100 = 0.55;
0.8% = 0.8 ÷ 100 = 0.008;
150% = 150 ÷ 100 = 1.5;
400% = 400 ÷ 100 = 4;
4.8% = 4.8 ÷ 100 = 0.048。
答案:
4% = 0.04;
25% = 0.25;
1% = 0.01;
10% = 1 ÷ 10 = 0.1;
100% = 100 ÷ 100 = 1;
0.16% = 0.16 ÷ 100 = 0.0016;
135% = 135 ÷ 100 = 1.35;
260% = 260 ÷ 100 = 2.6;
31.5% = 31.5 ÷ 100 = 0.315;
99.9% = 99.9 ÷ 100 = 0.999;
3.2% = 3.2 ÷ 100 = 0.032;
55% = 55 ÷ 100 = 0.55;
0.8% = 0.8 ÷ 100 = 0.008;
150% = 150 ÷ 100 = 1.5;
400% = 400 ÷ 100 = 4;
4.8% = 4.8 ÷ 100 = 0.048。
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