2.4×2.1+20.3简便计算

2025-06-28 06:16:35
推荐回答(2个)
回答1:

2.4x2.1x20.3
=2.4x(2+0.1)x(20+0.3)
=(4.8+0.24)x(20+0.3)
=5.04x(20+0.3)
=5.04x20+5.04x0.3
=100.8+1.512
=102.312

回答2:

2.4*2.1+20.3
=5.04+20.3
=25.34
满意采纳奥