题目
巧算下列各题:
①15000÷125÷15
②1200÷25÷4
③27000÷(125×3)
④360×40÷60
答案:①15000÷125÷15 =15000÷15÷125 =1000÷125 =8 ②1200÷25÷4 =1200÷(25×4) =1200÷100 =12 ③27000÷(125×3) =27000÷125÷3 =27000÷3÷125 =9000÷125 =9×(1000÷125) =9×8 =72 ④360×40÷60 =360÷60×40 =6×40 =240