80 000 =0______· 10 _______
350 000 =_________ · 10 ________105 =________ × 10________89,3 =________ · 10________0,56 = ________ · 10 _______0,0000023 =______· 10______0,0309 =_________· 10 ______67 · 105 = ________· 10 _______345 · 10–4 =_______ · 10 ______