计算:0.01992÷0.004×1/2000=_.
问题描述:
计算:0.01992÷0.004×
=______. 1 2000
答
0.01992÷0.004×
1 2000
=19.92÷4÷2000
=19.92÷8÷1000
=2.49÷1000
=0.00249;
故答案为:0.00249.