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想好了吗?该选谁?1.一个数a(a不等于0)乘上一个小数,所得的积()。A.大于aB.小于aC.等于aD.不能确定2.近似数6.47的取值范围是()。A.6.471～6.474…B.6.465～6.469…C.6.465～6.474…3.3.6比一个数的5倍少0.4,这个数是多少?设这个数为x,方程为()。A.5x-3.6=0.4B.5x+3.6=0.4C.3.6
Think of it? Whose choice? 1. A number a (a not equal to 0) multiplied by a decimal, the resulting product (). A. Greater than aB. Less than aC. Equal to aD. Not sure 2. Approximation The range of 6.47 is (). A.6.471 ~ 6.474 ... B.6.465 ~ 6.469 ... C.6.465 ~ 6.474 ... 3.3.6 Less Than 5 Times of a Number 0.4 What is the number? Set this number to x and the equation is (). A.5x-3.6 = 0.4B.5x + 3.6 = 0.4C.3.6