初中數學/算則練習/小數四則

1. 31.11+5=
2. 3.8+0.15 =
3. 7.1+7.91 =
4. 0.9-0.08 =
5. 25.25+11.11=
6. 7.91-0.88 =
7. 31.36+5-5.05=
8. 36÷5=
9. 0.8÷0.2 =
10. 0.12÷0.4 =
11. 1.44×25+11=
12. 0.66×0.11=
13. 0.5x+12.2x=
14. 0.32*0.6=
15. 2.4y+3.6（10.101x+10.01z)-11.1105x-11.011z=