Respuesta :

Answer:

D.The ability to understand numbers and their relations/relationship

Explanation:

Number sense is basically a person's ability to use and understand numbers.

 It include the following main points:

  •  knowing their relative values.
  • how to use them to make judgments.  
  • how to use them in flexible ways when adding, subtracting, multiplying or dividing
  • how to develop strategies when counting such as using BODMAS , measuring or estimating.
  • Meaning, he can easily perform mathematical activities and even apply this in real life