Question

solve.
12.25 ÷ 2.5 = □
4.5 6.5 4.9 0.49

Explanation:

Step1: Multiply numerator and denominator by 10

To make the division easier, multiply both the dividend and the divisor by 10 to eliminate the decimal in the divisor. So we have \((12.25\times10)\div(2.5\times10)=122.5\div25\).

Step2: Perform the division

Now divide 122.5 by 25. \(25\times4 = 100\), \(122.5 - 100 = 22.5\), \(25\times0.9 = 22.5\), so \(4 + 0.9 = 4.9\).

Answer:

4.9 (the option corresponding to 4.9)