Chapter 3

Prealgebra · 726 exercises

Problem 12

Add and subtract the following mixed numbers as indicated. \(1 \frac{5}{8}+2 \frac{1}{2}\)

5 step solution

Problem 12

Write your answers as proper fractions or mixed numbers, not as improper fractions. Find the following products. (Multiply.) $$\frac{2}{3} \cdot 4 \frac{9}{10}$$

4 step solution

Problem 12

Find each of the following products. (Multiply.) $$\frac{2}{9}\left(\frac{9}{2}\right)$$

5 step solution

Problem 12

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$\frac{4}{3} \div \frac{4}{3}$$

5 step solution

Problem 12

Find the following sums and differences, and reduce to lowest terms. (Add or subtract as indicated.) $$\frac{x+5}{4}-\frac{3}{4}$$

4 step solution

Problem 12

Factor each of the following into a product of prime factors. $$210$$

4 step solution

Problem 13

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$\left(1+\frac{5}{6}\right)\left(1-\frac{5}{6}\right)$$

2 step solution

Problem 13

Change each improper fraction to a mixed number. $$\frac{9}{8}$$

3 step solution

Problem 13

Add and subtract the following mixed numbers as indicated. \(7 \frac{5}{12}-3 \frac{1}{3}\)

4 step solution

Problem 13

Write your answers as proper fractions or mixed numbers, not as improper fractions. Find the following products. (Multiply.) $$2 \frac{1}{2} \cdot 3 \frac{1}{3} \cdot 1 \frac{1}{2}$$

6 step solution

Problem 13

Find each of the following products. (Multiply.) $$\frac{1}{2} \cdot \frac{1}{3} \cdot \frac{1}{4}$$

4 step solution

Problem 13

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$\frac{7}{8} \div \frac{8}{7}$$

5 step solution

Problem 13

Find the following sums and differences, and reduce to lowest terms. (Add or subtract as indicated.) $$\frac{1}{10}-\frac{3}{10}-\frac{4}{10}$$

5 step solution

Problem 13

Factor each of the following into a product of prime factors. $$215$$

4 step solution

Problem 13

Name the denominator of each fraction. $$\frac{a}{12}$$

2 step solution

Problem 14

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$\left(2-\frac{1}{4}\right)\left(2+\frac{1}{4}\right)$$

6 step solution

Problem 14

Change each improper fraction to a mixed number. $$\frac{10}{9}$$

4 step solution

Problem 14

Add and subtract the following mixed numbers as indicated. \(7 \frac{3}{4}-3 \frac{5}{12}\)

4 step solution

Problem 14

Write your answers as proper fractions or mixed numbers, not as improper fractions. Find the following products. (Multiply.) $$3 \frac{1}{5} \cdot 5 \frac{1}{6} \cdot 1 \frac{1}{8}$$

4 step solution

Problem 14

Find each of the following products. (Multiply.) $$\frac{2}{3} \cdot \frac{4}{5} \cdot \frac{1}{3}$$

5 step solution

Problem 14

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$\frac{4}{3} \div \frac{3}{4}$$

5 step solution

Problem 14

Find the following sums and differences, and reduce to lowest terms. (Add or subtract as indicated.) $$\frac{3}{20}-\frac{1}{20}-\frac{4}{20}$$

3 step solution

Problem 14

Factor each of the following into a product of prime factors. $$75$$

5 step solution

Problem 14

Name the denominator of each fraction. $$\frac{b}{14}$$

3 step solution

Problem 15

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$\frac{2}{3}+\frac{1}{3}\left(2 \frac{1}{2}+\frac{1}{2}\right)^{2}$$

5 step solution

Problem 15

Find each of the following products. (Multiply.) $$\frac{2}{5} \cdot \frac{3}{5} \cdot \frac{4}{5}$$

4 step solution

Problem 15

Change each improper fraction to a mixed number. $$\frac{19}{4}$$

4 step solution

Problem 15

Add and subtract the following mixed numbers as indicated. \(6 \frac{1}{3}-4 \frac{1}{4}\)

4 step solution

Problem 15

Write your answers as proper fractions or mixed numbers, not as improper fractions. Find the following products. (Multiply.) $$\frac{3}{4} \cdot 7 \cdot 1 \frac{4}{5}$$

6 step solution

Problem 15

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$\frac{9}{16} \div\left(-\frac{3}{4}\right)$$

4 step solution

Problem 15

Find the following sums and differences, and reduce to lowest terms. (Add or subtract as indicated.) $$\frac{1}{a}+\frac{4}{a}+\frac{5}{a}$$

5 step solution

Problem 15

Factor each of the following into a product of prime factors. $$15$$

4 step solution

Problem 16

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$\frac{3}{5}+\frac{1}{4}\left(2 \frac{1}{2}-\frac{1}{2}\right)^{3}$$

5 step solution

Problem 16

Find each of the following products. (Multiply.) $$\frac{1}{4} \cdot \frac{3}{4} \cdot \frac{3}{4}$$

4 step solution

Problem 16

Change each improper fraction to a mixed number. $$\frac{23}{5}$$

4 step solution

Problem 16

Add and subtract the following mixed numbers as indicated. \(5 \frac{4}{5}-3 \frac{1}{3}\)

5 step solution

Problem 16

Write your answers as proper fractions or mixed numbers, not as improper fractions. Find the following products. (Multiply.) $$\frac{7}{8} \cdot 6 \cdot 1 \frac{5}{6}$$

6 step solution

Problem 16

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$-\frac{25}{36} \div\left(-\frac{5}{6}\right)$$

6 step solution

Problem 16

Find the following sums and differences, and reduce to lowest terms. (Add or subtract as indicated.) $$\frac{5}{a}+\frac{4}{a}+\frac{3}{a}$$

4 step solution

Problem 16

Factor each of the following into a product of prime factors. $$42$$

5 step solution

Problem 17

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$2 \frac{3}{8}+\frac{1}{2}\left(\frac{1}{3}+\frac{5}{3}\right)^{3}$$

4 step solution

Problem 17

Find each of the following products. (Multiply.) $$\frac{x}{y} \cdot \frac{y}{z} \cdot \frac{z}{x}$$

6 step solution

Problem 17

Change each improper fraction to a mixed number. $$\frac{29}{6}$$

3 step solution

Problem 17

Add and subtract the following mixed numbers as indicated. \(10 \frac{5}{6}+15 \frac{3}{4}\)

5 step solution

Problem 17

Find the following quotients. $$3 \frac{1}{5} \div 4 \frac{1}{2}$$

5 step solution

Problem 17

Find the quotient in each case by replacing the divisor by its reciprocal and multiplying. $$\frac{25}{46} \div \frac{40}{69}$$

5 step solution

Problem 17

Reduce each fraction to lowest terms. $$\frac{5}{10}$$

3 step solution

Problem 17

For the set of numbers \(\left\\{\frac{3}{4}, \frac{6}{5}, \frac{12}{3}, \frac{1}{2}, \frac{9}{10}, \frac{20}{10}\right\\},\) list all the proper fractions.

3 step solution

Problem 18

Use the rule for order of operations to simplify each of the following. [Examples 1–3] $$8 \frac{2}{3}+\frac{1}{3}\left(\frac{8}{5}+\frac{7}{5}\right)^{2}$$

6 step solution

Problem 18

Find each of the following products. (Multiply.) $$\frac{y}{x} \cdot \frac{x}{z} \cdot \frac{z}{y}$$

4 step solution

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