Why is $1$ called the multiplicative identity?

Use braces, an ellipsis, and digits to illustrate the set of negative even numbers.

Name the property illustrated by this equation, and describe the meaning of the property.

$$x \cdot 5=5 x$$

What is the difference when the sum of $2,3$, and $4$ is subtracted from the product of $2,3$, and $4$ ?

Use braces, an ellipsis, and digits to illustrate the set of negative odd numbers.

If the divisor is $4$ and the quotient is $8$, what is the dividend?

Which property of addition is stated by this equation?

$$(a+b)+c=a+(b+c)$$

Replace each circle with the proper comparison symbol. Then write the comparison as a complete sentence, using words to write the numbers.

(a) $\frac{1}{2} \bigcirc \frac{1}{2} \cdot \frac{1}{2}\qquad$ (b) $-2 \bigcirc-4$

Use words to write $50,574,006$.

Working in groups of two or three, use your fraction manipulatives to help you with the following exercises:

What fraction is half of $\frac{1}{3}$ ?

Write down the whole number divisors of $50$.

What is the quotient when the product of $20$ and $20$ is divided by the sum of $10$ and $10$?

What is the name for numbers that are greater than zero?

Which of these numbers is not an integer?

A. $-1 \quad$ B. $0\quad$ C. $\frac{1}{2} \quad$D. $1$