口算.
453+198=____
10﹣0.03=____
0.1÷0.01=____
4×0.025=____
4.5﹣0.75=____
5×4÷5×4=____
3.14×1.6=____
28.26÷3.14=____
0.36+0.2=____
—How often do you go skating? —________.I can't skate at all.