Question

Which is the best for the sum 2/9+10/11?a. 0+0=0 b.1/2+1/2=1 c. 1+1=2d. 0+1=1

Answer 1

You have the following expression:

$\frac{2}{9}+\frac{10}{11}$

By definition, when you want to express a fraction as a decimal number, you must divide the numerator by the denominator. Knowing this, you get the following:

$\begin{gathered} \frac{2}{9}\approx0.22 \\ \\ \frac{10}{11}\approx0.90 \end{gathered}$

You can identify that:

$\begin{gathered} 0.22\approx0 \\ 0.90\approx1 \end{gathered}$

Based on the above, you can determine that the best estimate for the sum is:

$\frac{2}{9}+\frac{10}{11}\approx0+1=1$

The answer is option d:

$0+1=1$