12÷0.9≈
12÷0.03=
25×40%=
2.4-2.4×0.5=
8×5÷8×5=
神舟十八号重多少吨?
- = × = 12.5÷0.5= 0.32× =
3200+40= - = × ×0= 5-4÷ =
25+85= 73.9-39.6= = =
18÷6= 798+205≈ 632÷69≈ 803-207≈