7.48×0.57.48÷0.5 2.86×12.86÷0.01
1.2x-x= 200×0.04= 7.5a+2.5a= 5.5÷11=
①127×0.43=
②2.6×1.08=
③51.3÷0.27=
④8.84÷1.7=
⑤1.05×0.26≈(保留两位小数)
⑥29.2÷3.4≈(保留一位小数)
(9999+9997+…+9001)-(1+3+…+999)