5.1-2.29= 3÷ 2
= 52 5
+ 11 7
=6 7
3.9×
= 4 3 13
÷ 6
= 18÷3× 7 6
=1 3
0.2×0.8×0.5= 89.12+0.78= (0.15+
)÷3= 103
6- 2
-1.6= 0.25×0.7×0.4= 99×0.35+0.35=2 5
5 |
4 |
7 |