1.254 × 5 = 1270。2.240 × 6 = 1440。3.461 × 9 = 4149。4.805 × 9 = 7245。5.752 × 2 = 1504。6.452 × 8 = 3616。7.152 × 2 = 304。8.569 × 8 = 4552。9.458 × 6 = 2748。10.111 × 5 = 555。11.666 × 5 = 3330。12.789 × 3 = 2367。13.856 × 8 = 6848。14.652 × 8 = 5216。15.362 × 4 = 1448。16.168 × 2 = 336。17.185 × 3 = 555。18.264 × 2 = 528。19.176 × 3 = 528。20.196 × 3 = 588。