9.8x25简便计算

2025-01-01 11:57:33
推荐回答(5个)
回答1:

9.8x25
=4.9×(2x25)
=4.9x50
=245

回答2:

9.8x25
=(10-0.2)x25
=10x25-0.2x25
=250-5
=245

回答3:


回答4:

原式=(9.8/2)*(25*2)=4.9*50=245

回答5:

9.8×25
=10×25-0.2×25
=250-5
=245