N1B3TNp4
Answer to Problem 4: Answers may vary. Acceptable answers include 12 drawn shapes with any three of them circled. Example:

DEFINITION:
commonly used fractions—halves, thirds, fourths, fifths, sixths, eighths, and tenths.[1]
[1] National Council of Teachers of Mathematics. (2000). Principles and standards for school mathematics (p. 150). Reston, VA: Author.