题目内容
3.8+24.6
12.34-2.9
46.76-5.13
9.13+16.5
<
<
35.12+4.44 12.34-2.9
<
<
8.7+5.146.76-5.13
>
>
13.47+20.62 9.13+16.5
<
<
24.16-7.2.分析:本题根据题目中数据的特点及小数加减法的运算法则计算出两边算式的结果后比较大小即可.
解答:解:(1)由于3.8+24.6=28.4,35.12+4.44=39.56,
28.4<39.56,
则3.8+24.6<35.12+4.44;
(2)由于12.34-2.9=9.44,8.7+5.1=13.6,
9.44<13.6,
则12.34-2.9<8.7+5.1;
(3)由于46.76-5.13=41.63,13.47+20.62=34.09,
41.63>34.09,
则46.76-5.13>13.47+20.62;
(4)由于9.13+16.5=15.63,24.16-7.2=16.96,
15.63<16.96,
则9.13+16.5<24.16-7.2.
故答案为:<,<,>,<.
28.4<39.56,
则3.8+24.6<35.12+4.44;
(2)由于12.34-2.9=9.44,8.7+5.1=13.6,
9.44<13.6,
则12.34-2.9<8.7+5.1;
(3)由于46.76-5.13=41.63,13.47+20.62=34.09,
41.63>34.09,
则46.76-5.13>13.47+20.62;
(4)由于9.13+16.5=15.63,24.16-7.2=16.96,
15.63<16.96,
则9.13+16.5<24.16-7.2.
故答案为:<,<,>,<.
点评:完成本题要细心,注意小数点的对齐.
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