2.74×0.98◯2.74 1.9×0.78◯0.78 4.75×1◯4.75
8.5×15◯85×1.5 86×0.27◯0.27×8.5 6.3×0.98◯6.4×1.04
0.45×0.2=
4.38+3.5=
86-4.25=
(3.85+5.45)×0=
0.75×1.00=
2.5×4=
5.4×20=
7.85×0.004=
0.12×0.45= 0.085×0.16=
0.38×0.07= 8.75×0.99=
5.05×6.6= 10.6×2.3=
20×30 0.2×0.3
=(2×10)×(3×10) =(2×0.1)×(3×0.1)
=(2×3)×(10×10) =(2×3)×(0.1×0.1)
=6×100 =6×0.01
=600 =0.06
5的积，它是( )。
