Name Date Class

Applying Rational Numbers

Practice B: Solving Equations Containing Decimals

Solve.

1. t + 0.77 = 9.3 2. p - 1.34 = -11.8 3. r + 2.14 = 7.8

4. 3.65 + e = -1.4 5. w - 16.7 = 8.27 6. z - 17.2 = 7.13

7. p - 67.5 = 24.81 8. h + 26.9 = 12.74 9. k + 89.2 = -47.62

10. x - 0.45 = 5.97 11. 1.08 + n = 15.72 12. y - 6.32 = 0.73

13. 4.3p = 28.81 14. 7.7j = 76.23 15. 3.8g = -104.12

16. 18.36 = 2.7y 17. 99.96 = 6.8x 18. 293.92 = 17.6c

19. = 6.9 20. = 15.6 21. = 20.8

22. = 15.4 23. = 1.7 24. = -5.2

25. Jeff paid a flat fee of $269.50 for a year's worth of vet visits for
his 4 cats. He made 14 visits during the year. What was the
average cost per visit?

Holt McDougal Mathematics

Name Date Class

15. x = 9.5 16. m = 3.2

17. s = 32.4 18. f = 5.6

19. d = 3.22 20. c = 0.7

21. h = 73.2 22. a = 2.94

23. $6.25 24. $47.20

Practice B

1. t = 8.53 2. p = -10.46

3. r = 5.66 4. e = -5.05

5. w = 24.97 6. z = 24.33

7. p = 92.31 8. h = -14.16

9. k = -136.82 10. x = 6.42

11. n = 14.64 12. y = 7.05

13. p = 6.7 14. j = 9.9

15. g = -27.4 16. y = 6.8

17. x = 14.7 18. c = 16.7

19. e = 51.06 20. f = 198.12

21. d = 201.76 22. w = -3.08

23. m = 16.66 24. s = -74.62

25. $19.25

Practice C

1. t = 4.61 2. p = -15.74

3. c = 7.8 4. e = -14.39

5. w = 7.9 6. g = 7.1

7. a = 32.94 8. h = -15.25

9. k = -137.34 10. r = 25.7

11. j = 5.7 12. p = -8.4

13. y = 3.9 14. x = 8.8

15. z = 13.39 16. a = 50.246

17. b = -23.581 18. d = 201.566

19. s = 2.54 20. v = 5.9274

21. f = 193.802 22. n = 2.2382

23. t = 11.656 24. w = -0.02632

25. 3.8 miles 25. -$7,429

Review for Mastery

1. 2.2 2. 1.9; 1.9
7.3

3. +8.3; +8.3 4. -5.75; -5.75 4.18 -11.95

5. t = 14.6 6. p = 33.1

7. r = -11.05 8. k = -21.7

9. 5.7; 5.7 10. ¸; -6; ¸; -6 ; 8 -1.34

11. 0.14; 0.14 12. 6.3; •; •; 6.3
2.1 -57.33

13. y = 11.7 14. c = -6.1

15. s = 39.9 16. h = -2.88

Challenge

1. (12.7, -15.4) 2. (2, 19.2)

3. (3.12, 0.78) 4. (0.85, 4.25)

5. (0.4, 0.2) 6. (1.98, 6.93)

7. (-1.2, 2.2) 8. (-2.7, 3.3)

9. (-4.3, -2.15) 10. (-10.4, 21.9)

11. (1.4, -4.2) 12. (-1.28, 1.63)

Problem Solving

1. 2.4 meters 2. 14.793 grams

3. 5.1 miles 4. 47.5 pounds

5. B 6. G

7. D 8. J

Reading Strategies

1. The steps are the same.

2. Whole numbers are used in whole number equations and decimals are used in decimal equations.

3. Get y by itself on one side of the equation.

4. division

5. Divided by 3 in both types of equations.

Puzzles, Twisters & Teasers

g. -2

t. 0.9

n. -0.15

h. 0.72

i. -4.8

e. -7.11

l. 3.92

Holt McDougal Mathematics