×a=4.2 a- =3.75
4.8×3.5= 0.168÷=0.35
①5.88÷0.14 58.8÷0.14 ②11.2÷0.2 1.12÷0.2
③4.26÷0.8 4.26 ④3.25÷0.13.25×10
2.37×6.3+2.37×3.7 2.5×(1.25×0.32) 9.9×12.2