题目内容
比大小(在横线里填上“<”、“>”或“=”)
0.1×0.1 < < 0.1÷0.1 |
0.3÷0.15 > > 0.3×0.15 |
0.999÷0.1 = = 99.9×0.1 |
33.2÷2 > > 3.2×2. |
分析:根据乘除法的计算方法进行解答即可.
解答:解:(1)0.1×0.1=0.01,0.1÷0.1=1,
0.01<1,
0.1×0.1<0.1÷0.1;
(2)0.3÷0.15=2,0.3×0.15=0.045,
2>0.045,
0.3÷0.15>0.3×0.15;
(3)0.999÷0.1=9.99,99.9×0.1=9.99,
9.99=9.99,
0.999÷0.1=99.9×0.1;
(4)33.2÷2=16.6,3.2×2=6.4,
16.6>6.4,
33.2÷2>3.2×2.
故答案为:<,>,=,>.
0.01<1,
0.1×0.1<0.1÷0.1;
(2)0.3÷0.15=2,0.3×0.15=0.045,
2>0.045,
0.3÷0.15>0.3×0.15;
(3)0.999÷0.1=9.99,99.9×0.1=9.99,
9.99=9.99,
0.999÷0.1=99.9×0.1;
(4)33.2÷2=16.6,3.2×2=6.4,
16.6>6.4,
33.2÷2>3.2×2.
故答案为:<,>,=,>.
点评:考查了小数乘除法的计算方法及大小比较.
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