计算题
4.6×12.5-0.6×12.5+3.7
答案与解析
答案
4.6×12.5-0.6×12.5+3.7
=(4.6-0.6)×12.5+3.7
=4×12.5+3.7
=50+3.7
=53.7
解析
运用乘法分配律合并前两个积,4.6-0.6=4;先算4×12.5=50,再加3.7。
4.6×12.5-0.6×12.5+3.7
4.6×12.5-0.6×12.5+3.7
=(4.6-0.6)×12.5+3.7
=4×12.5+3.7
=50+3.7
=53.7
运用乘法分配律合并前两个积,4.6-0.6=4;先算4×12.5=50,再加3.7。