Review: Number Play Mastery

Synthesize the various number puzzles, algorithms, and logical rules learned in the chapter.

5 lessons

Preview · progress not saved — Chapter 1 is free

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checklist

What You've Conquered

Checklist of chapter skills.

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After This Chapter, I Can...

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flashcard

Vocabulary Recall

Flashcards for key chapter terms.

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quiz

Test Your Play

Progressive difficulty questions covering the chapter.

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Which of the following numbers is known as the Kaprekar constant for 4-digit numbers?

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feedback

Explain Your Reasoning

Open ended textbook question about supercell logic.

Answer the following reasoning questions about supercells in your own words.

Will the cell having the largest number in a table always be a supercell?
Can the cell having the smallest number in a table be a supercell? Why or why not?

Will the cell having the largest number in a table always be a supercell?*

Focus on: the definition of a supercell relative to the absolute largest number.

Can the cell having the smallest number in a table be a supercell? Why or why not?*

Focus on: why this is mathematically impossible based on the rules of neighbors.

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Chat

Socratic Challenge

Socratic chatbot to guide through the Reverse-and-Add.

Learners can ask follow-up questions and keep the thread going.

This is a calculation — let's find what we know first. We are going to test if the number 68 yields a palindrome using the reverse-and-add method. Let's do the very first step: what do you get when you reverse the digits of 68 and add that to the original number?

over 2 years ago

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