7x-1.05=0.35 9x-4x=2.05
6.8×0.01=
12.5×0.8=
12÷60=
0.01÷0.1=
0.56÷0.7=
1.8÷0.6=
500×0.4=
0.75×0÷8.75=
2×7.8÷3.9 2.1÷(1.2-0.5)
①x+1.75=3.4
②9x=0.27
③x-2.08=4.25
④x÷1.2=1.2
0.71 7.8÷0.997.8 a×ba(其中a>1,b>1)
4.6
2.3 2.25
2.9494…≈
≈
0.999…≈
12.5757…≈
9.0505…≈