×1= 1.2× = 4× = × =
× = × = × = 1.5× =
2.05×4= 0.14÷0.2 = 0.5²=
906+94= 0.7×11=
305-199= ×0= 31×197≈
3.5×0.2= 2.4×=
× ×
×13 ×4
0.4+ = = = =
= = =