问题
填空题
计算:75×4.7+15.9×25=______.
答案
75×4.7+15.9×25,
=75×4.7+5.3×(3×25),
=75×(4.7+5.3),
=75×10,
=750;
故答案为:750.
计算:75×4.7+15.9×25=______.
75×4.7+15.9×25,
=75×4.7+5.3×(3×25),
=75×(4.7+5.3),
=75×10,
=750;
故答案为:750.