6.5×1.2=1.2×
2.5×1.8×0.4=(×)×1.8
11.2×4.5+4.5×8.8=(+)×
12.9×0.812.9 6.5×7.24.68 8×7.56
1.7×666.6 1.3×0.40.52 4.3×2.413.2
36×2.6= 0.36×26=
0.7×0.9= 0.14×0.3= 3.2×0.3= 60×0.5=
0.16×0.5= 7×0.08= 1.8×0.4= 0.24×3=
①1.48×2.4
②1.8×0.73
③3.07×1.5
④3.85×3.2
⑤3.2×0.54(保留一位小数)
⑥31.4×0.26 (保留两位小数)