①3.8×0.15=
②2.7+9.41=
③4.6×50=
④13.2×9.8=
⑤8.7×2.04=
⑥0.86×0.72=
⑦5-1.08=
⑧7.5×1.8=
①15.8+7.43=验算:
②8.4-2.45=验算: