Mark used a number line to model dividing 2 3 by 3. He divided the number line from 0 to 1 in 3 equal sections, and then divided each of those sections into 2 equal parts. Mark says 2 3 ÷ 3 is 1 3 . Is his answer correct? Explain why or why not.

Answer :

Answer:

No, his answer is not correct.

Step-by-step explanation:

Given expression,

[tex]\frac{2}{3}\div 3[/tex]

[tex]=\frac{\frac{2}{3}}{3}[/tex]

[tex]=\frac{2}{3\times 3}[/tex]

[tex]=\frac{2}{9}[/tex]

Thus, his answer is not correct.

By model :

Draw number line from 0 to 1 in 3 equal section,

Then divided each of those sections into 3 equal parts,

We get,

[tex]\frac{2}{3}\div 3=\frac{2}{9}[/tex]

${teks-lihat-gambar} slicergiza
abidemiokin

Mark's answer is incorrect because he divided the number line into 2 equal parts instead of dividing the number line into 3 equal parts.

Given  the expression solved by mark using the number line expressed as:

[tex]\frac{2}{3} \div 3[/tex]

First, we need to simplify the given expression to be sure that the mark is correct as shown:

[tex]=\frac{2}{3} \div 3\\= \frac{2}{3} \times \frac{1}{3}\\=\frac{(2\times 1)}{3\times 3}\\=\frac{2}{9}[/tex]

Hence Mark's answer is incorrect because he divided the number line into 2 equal parts instead of dividing the number line into 3 equal parts.

${teks-lihat-gambar} abidemiokin

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