①4920÷24-17×12
②0.25 ×6.7×4
③ × - ÷
④9.43-(1.74+1.43)
⑤
⑥ ÷[( + )×2]
① - -
② -( - )
③
④ × ×16
⑤ × + ×
⑥ - +
①75×
② ×58+42÷8
③ × ×51×55
④
⑤23-
⑥ + ÷ +
①475+390÷13-123
②270÷1.25÷0.8
③6.5÷ ×
④24×( + - )
⑤
⑥ ×47+52÷ +0.375
①
②
③
④