3.6*1.25+0.32⼀0.4怎样运用简便运算

2025-04-14 22:47:42
推荐回答(1个)
回答1:

3.6×1.25+0.32/0.4=3.6×1.25+32/40
=3.6×1.25+0.8
=(4×0.9)×1.25+0.8
=4×1.25×0.9+0.8
=5×0.9+0.8
=4.5+0.8
=5.3