8.1×1.3-8÷1.3+1.9×1.3+11.9÷1.3=_.
问题描述:
8.1×1.3-8÷1.3+1.9×1.3+11.9÷1.3=______.
答
8.1×1.3-8÷1.3+1.9×1.3+11.9÷1.3,
=(8.1+1.9)×1.3+(11.9-8)÷1.3,
=10×1.3+3.9÷1.3,
=13+3,
=16.
故答案为:16.