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急!急!急!數學一題!盡快回答
發問:
0.99÷_______=1.8
最佳解答:
0.99÷0.55=1.8 你可以用0.99÷1.8找答案
其他解答:
Question : 0.99÷_______=1.8 --------------------------------------------------- Way A : ( Use 方程 ) Let the answer is y 0.99 ÷ y = 1.8 0.99 ÷ y x y = 1.8y 0.99 = 1.8y 0.99 ÷ 1.8 = 1.8y ÷ 1.8 y = 0.55 So , the answer is 0.55 --------------------------------------------------- Way B : ( Try ) Try the answer is 1 first . 0.99 ÷ 1 = 0.99 ( The answer is too small , so the answer should be smaller ) And 0.5 , 0.99 ÷ 0.5 = 1.98 ( The answer is too big , so the answer should be bigger ) try 0.6 : 0.99 ÷ 0.6 = 1.65 ( Very close , but the answer is smaller than 1.8 , so the answer should be smaller ) 0.5
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