Use a Calculator to Evaluate $39^2$ A)78
B)1,521
C)981
D)381

question 30

Multiple Choice

Use a calculator to evaluate $39^2$

• A)78
• B)1,521
• C)981
• D)381

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Definitions:

Identical Glasses

Glasses that are exactly the same in appearance and specifications.

Concrete Operations

This stage in Piaget's theory of cognitive development describes children aged 7-12 years becoming capable of logical thought processes but still struggling with abstract concepts.

Cognitive Development

The process by which individuals perceive, think, and gain understanding through the interaction of genetic and learned factors.

Abstract Thinking

involves the ability to think about objects, principles, and ideas that are not physically present, allowing for processes like conceptualizing, reasoning, and problem-solving.