Chapter 1

Perform the indicated subtraction. $$26-26$$

Evaluate each expression for \(x=7\) and \(y=5\). $$5 x-4 y$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$100$$

In Exercises \(1-34,\) perform the indicated multiplication. $$-0.2(-0.6)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$26 x^{2}-27 x^{2}$$

Find each sum without the use of a number line. $$-9+4$$

Use the commutative property of multiplication to write an equivalent algebraic expression. $$5(x+3)$$

Perform the indicated subtraction. $$13-(-13)$$

Evaluate each expression for \(x=7\) and \(y=5\). $$\frac{21}{x}+\frac{35}{y}$$

Express each rational number as a decimal. $$\frac{3}{4}$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$140$$

In Exercises \(1-34,\) perform the indicated multiplication. $$-0.3(-0.7)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$29 x^{2}-30 x^{2}$$

Find each sum without the use of a number line. $$-7+3$$

Use the commutative property of multiplication to write an equivalent algebraic expression. $$6(x+4)$$

Perform the indicated subtraction. $$15-(-15)$$

Evaluate each expression for \(x=7\) and \(y=5\). $$\frac{50}{y}-\frac{14}{x}$$

Express each rational number as a decimal. $$\frac{3}{5}$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$110$$

In Exercises \(1-34,\) perform the indicated multiplication. $$(-5)(-2)(3)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$27 x^{3}-26 x^{3}$$

Find each sum without the use of a number line. $$12+(-8)$$

Use an associative property to rewrite each algebraic expression. Once the grouping has been changed, simplify the resulting algebraic expression. $$7+(5+x)$$

Perform the indicated subtraction. $$0-13$$

Evaluate each expression for \(x=7\) and \(y=5\). $$\frac{2 x-y+6}{2 y-x}$$

Express each rational number as a decimal. $$\frac{7}{20}$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$79$$

In Exercises \(1-34,\) perform the indicated multiplication. $$(-6)(-3)(10)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$30 x^{3}-29 x^{3}$$

Find each sum without the use of a number line. $$13+(-5)$$

Use an associative property to rewrite each algebraic expression. Once the grouping has been changed, simplify the resulting algebraic expression. $$9+(3+x)$$

Perform the indicated subtraction. $$0-15$$

Evaluate each expression for \(x=7\) and \(y=5\). $$\frac{2 y-x+24}{2 x-y}$$

Express each rational number as a decimal. $$\frac{3}{20}$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$83$$

In Exercises \(1-34,\) perform the indicated multiplication. $$(-4)(-3)(-1)(6)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$5 x^{2}+5 x^{3}$$

Find each sum without the use of a number line. $$6+(-9)$$

Use an associative property to rewrite each algebraic expression. Once the grouping has been changed, simplify the resulting algebraic expression. $$7(4 x)$$

Perform the indicated subtraction. $$0-(-13)$$

Write each English phrase as an algebraic expression. Let the variable \(x\) represent the number. four more than a number

Express each rational number as a decimal. $$\frac{7}{8}$$

Identify each natural number as prime or composite. If the number is composite, find its prime factorization. $$81$$

In Exercises \(1-34,\) perform the indicated multiplication. $$(-2)(-7)(-1)(3)$$

Simplify each algebraic expression, or explain why the expression cannot be simplified. $$8 x^{2}+8 x^{3}$$

Find each sum without the use of a number line. $$3+(-11)$$

Use an associative property to rewrite each algebraic expression. Once the grouping has been changed, simplify the resulting algebraic expression. $$8(5 x)$$

Perform the indicated subtraction. $$0-(-15)$$

Write each English phrase as an algebraic expression. Let the variable \(x\) represent the number. six more than a number

Express each rational number as a decimal. $$\frac{5}{16}$$