5. greg says that 3.3 is a rational number. kari saks 3.3 is not a terminating
decimal. who is correct and why? lesson 1-2

Using the concept of rational numbers, it is found that 5.3 is a rational number, as it is a terminating decimal, and thus, Greg is correct.

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Number sets are used to solve this question.

Whole numbers: Set of numbers including all positive numbers and 0, so: {0,1,2,...} Integer numbers: Number without decimals, that can be positive of negative, so: {...,-2,-1,0,1,2,....} Rational numbers: Integer plus decimals that can be represented by fractions, that is, they either have a pattern, or have a finite number of decimal digits, for example, 0, 2, 0,45(finite number of decimal digits), 0.3333(3 repeating is the pattern), 0.32344594459(4459 repeating is the pattern). Irrational numbers: Decimal numbers that are not represented by patterns, that is, for example, 0.1033430290339...., or 0.3333333...... Real numbers: Rational plus irrational.

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3.3 is a terminating decimal, as it has only one digit after the decimal point, thus, it is a rational number, and Greg is correct. is not terminating, but this problem is about 3.3.

A similar problem is given at link