Chapter 8

Fundamentals of Mathematics · 299 exercises

Problem 19

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 921+796 $$

4 step solution

Problem 20

Use the distributive property to obtain the exact result. \((\) Section 8.4\() 80 \cdot 107\)

5 step solution

Problem 20

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$3,704+4,704$$

5 step solution

Problem 20

Estimate each sum or difference using the method of rounding. After you have made an estimate, find the exact value of the sum or difference and compare this result to the estimated value. Result may vary. $$ 7 \frac{5}{12}+10 \frac{1}{16} $$

6 step solution

Problem 20

Use the distributive property to compute each product. $$ 25 \cdot 38 $$

4 step solution

Problem 20

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 611+806 $$

4 step solution

Problem 21

Use the distributive property to obtain the exact result. \((\) Section 8.4\() 400 \cdot 215\)

7 step solution

Problem 21

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$41 \cdot 63$$

4 step solution

Problem 21

Estimate each sum or difference using the method of rounding. After you have made an estimate, find the exact value of the sum or difference and compare this result to the estimated value. Result may vary. $$ 3 \frac{11}{20}+2 \frac{13}{25}+1 \frac{7}{8} $$

6 step solution

Problem 21

Use the distributive property to compute each product. \(25 \cdot 96\)

4 step solution

Problem 21

Use the clustering method to estimate each sum. Results may vary. $$ 518+721+493+689 $$

3 step solution

Problem 21

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 4,681+9,325 $$

4 step solution

Problem 22

For problems 22-25, estimate each value. After you have made an estimate, find the exact value. Results may vary. (Section 8.5) \(\frac{15}{16}+\frac{5}{8}\)

4 step solution

Problem 22

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$38 \cdot 81$$

4 step solution

Problem 22

Estimate each sum or difference using the method of rounding. After you have made an estimate, find the exact value of the sum or difference and compare this result to the estimated value. Result may vary. $$ 6 \frac{1}{12}+1 \frac{1}{10}+5 \frac{5}{6} $$

4 step solution

Problem 22

Use the distributive property to compute each product. \(75 \cdot 14\)

5 step solution

Problem 22

Use the clustering method to estimate each sum. Results may vary. $$ 981+1208+1214+1006 $$

4 step solution

Problem 22

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 6,476+7,814 $$

4 step solution

Problem 23

Estimate each value. After you have made an estimate, find the exact value. Results may vary. \((\) Section 8.5\() \frac{1}{25}+\frac{11}{20}+\frac{17}{30}\)

5 step solution

Problem 23

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$ 18 \cdot 28 $$

5 step solution

Problem 23

Estimate each sum or difference using the method of rounding. After you have made an estimate, find the exact value of the sum or difference and compare this result to the estimated value. Result may vary. \(\frac{15}{16}-\frac{7}{8}\)

4 step solution

Problem 23

Use the distributive property to compute each product. \(85 \cdot 34\)

5 step solution

Problem 23

Use the clustering method to estimate each sum. Results may vary. $$ 23+81+77+79+19+81 $$

5 step solution

Problem 23

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 7,805-4,266 $$

4 step solution

Problem 24

Estimate each value. After you have made an estimate, find the exact value. Results may vary. \((\) Section 8.5\() 8 \frac{9}{16}+14 \frac{1}{12}\)

6 step solution

Problem 24

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$52 \cdot 21$$

5 step solution

Problem 24

Estimate each sum or difference using the method of rounding. After you have made an estimate, find the exact value of the sum or difference and compare this result to the estimated value. Result may vary. $$ \frac{12}{25}-\frac{9}{20} $$

5 step solution

Problem 24

Use the distributive property to compute each product. \(65 \cdot 26\)

5 step solution

Problem 24

Use the clustering method to estimate each sum. Results may vary. $$ 94+68+66+101+106+71+110 $$

3 step solution

Problem 24

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 8,427-5,342 $$

4 step solution

Problem 25

Estimate each value. After you have made an estimate, find the exact value. Results may vary. \((\) Section 8.5\() 5 \frac{4}{9}+1 \frac{17}{36}+6 \frac{5}{12}\)

7 step solution

Problem 25

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$307 \cdot 489$$

4 step solution

Problem 25

(Section 2.6\()\) The fact that (a first number - a second number) \(\quad\). a third number \(=\) a first number (a second number - a third number) is an example of which property of multiplication?

4 step solution

Problem 25

Use the distributive property to compute each product. \(55 \cdot 51\)

5 step solution

Problem 25

(Section 1.2) Specify all the digits greater than 6 .

2 step solution

Problem 25

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 14,106-8,412 $$

4 step solution

Problem 26

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$ 412 \cdot 807 $$

4 step solution

Problem 26

(Section 4.6) Find the quotient: \(\frac{14}{15} \div \frac{4}{45}\).

4 step solution

Problem 26

Use the distributive property to compute each product. \(15 \cdot 107\)

6 step solution

Problem 26

(Section 4.5) Find the product: \(\frac{2}{3} \cdot \frac{9}{14} \cdot \frac{7}{12}\).

5 step solution

Problem 26

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. $$ 26,486-18,931 $$

4 step solution

Problem 27

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. \(77 \cdot 614\)

4 step solution

Problem 27

(Section 5.4) Find the difference: \(3 \frac{5}{9}-2 \frac{2}{3}\).

5 step solution

Problem 27

Use the distributive property to compute each product. \(25 \cdot 208\)

5 step solution

Problem 27

(Section 6.3) Convert 0.06 to a fraction.

5 step solution

Problem 27

Estimate each calculation using the method of rounding. After you have made an estimate, find the exact value and compare this to the estimated result to see if your estimated value is reasonable. Results may vary. \(32 \cdot 53\)

5 step solution

Problem 28

Estimate each value using the method of rounding. After you have made an estimate, find the exact value. Compare the exact and estimated values. Results may vary. $$ 62 \cdot 596 $$

4 step solution

Problem 28

(Section 6.8\()\) Find the quotient: \(4.6 \div 0.11\).

6 step solution

Problem 28

Use the distributive property to compute each product. \(35 \cdot 402\)

5 step solution

Problem 28

(Section 7.3) Write the proportion in fractional form: "5 is to 8 as 25 is to \(40 .\) "

3 step solution

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