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There are two conceptual models for addition and subtraction.  What are the two models?

Express “how many” teddy bears there are in base 7.   (Only type the number. Do not type the base)

The following is a number expressed using the Egyptian numeration system.  Write the number in our numeration system.  

In base 8 there are _____ digits?

The following is a number expressed using the Roman numeration system.  Write the number in our numeration system.

{1, 2, 3, …} refer to the Counting numbers also called the ____________ numbers.

In our base 10 system, we use _____ digits.

How many thousands are in 60,321.043? [exact] How many whole thousands are in 60,321.043? [whole]

The following is a number expressed using the Egyptian numeration system.  Write the number in our numeration system.

Polya’s problem solving technique has 4 steps.  What is step 2?