= 3.15+ = = -0.35+ =
13÷52= = 2- = =
40×1.2= 25×0.4= 63= 29÷18=(分数)
2.4×0.5= 1.25×80= 3.6÷0.06= 1÷3=(分数)
①2y+y=105 ②6x-25=77 ③
=
64÷0.8= 200÷1000= 32= 0.52=
23= 2.4÷0.8= 0.25×0.4= 0.8×0.8÷0.8×0.8=
8.1-2.7= 3.6×2.5= 2÷0.5= 0.81+0.3=
0.32= 7.8a-2.3a-0.7a= - = + =