Lesson Warm Up 1 1. negative 2. 0 3. 1 4. 0.15 Lesson Practice 1 ...
Lesson Warm Up 1
1
g. 43 + (21 + 9) Associative Property of Addition = 43 + 30 Add. = 73 Add.
1. negative 2. 0 3. 1 4. 0.15
h. (16 · 4) · 4 Commutative Property of Multiplication
Lesson Practice 1 a. real numbers and irrational numbers
16 · (4 · 4)
b. real numbers and rational numbers 16 · 16 256
c. real numbers, rational numbers, integers, whole numbers, and natural numbers
i. - _ 2
d. Distributive Property
1 j. - _ 4
Associative Property of Multiplication Multiply. Multiply.
3q
k. 220 miles
e. Associative Property of Multiplication f. Commutative Property of Addition
© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–1
Saxon Algebra 2
Lesson Practice 1 1. -8 2. -6 3. -6 4. 15 5. 5.57 6. 88.95 7. 2.09, 2.1, 2.3 3 1 _ , 4, _ 8. _ 2 7 5
9. 140 miles
1
15. (6 · 5) · 2 = 6 · (5 · 2) = 6 · 10 = 60, Associative Property of Multiplication; (6 · 5) · 2 = (5 · 6) · 2 = 5 · (6 · 2) = 5 · 12 = 60, Commutative Property of Multiplication and Associative Property of Multiplication 16. A 3 pages
10. 27.5 miles
; 17. a. Suzy: _ 1 minute 3 pages Jonas: _ . 1 minute
11. First subtract 28 - 19, then multiply by -2, then add 6. -12 12. Possible answer: 2(3 · 6), Associative Property of Multiplication; 2(18), Multiply; 36, Multiply. 13. Mount Hood
b. Suzy and Jonas read at the same rate. 18. D 19. a. 1.43 inches b. 25.78 square inches 20. 11 homeruns
14. 6400 square yards
© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–2
Saxon Algebra 2
Lesson 21. Think of 19% as 0.20 - 0.01. Write an expression for the annual interest: 500(0.20 - 0.01). Use the Distributive Property: 500(0.20) - 500(0.01). Multiply: 100 - 5. Subtract: 95. The annual interest is $95.
1
27. 216 28. Student B is correct. Student A did not distribute the 3 to the second term. 29. a. 150 cm2 b. 125 cm3 30. 44 people chose dogs as their favorite pet.
22. a. 16 m b. 48 days 23. Inverse Property of Multiplication, Identity Property of Multiplication 24. a. 55° b. 125° 25. Negative integers are not considered whole numbers. The statement should be “–7 is a real number, a rational number, and an integer.” 26. a. 590,000 b. 200,000 © 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–3
Saxon Algebra 2
1
g. 43 + (21 + 9) Associative Property of Addition = 43 + 30 Add. = 73 Add.
1. negative 2. 0 3. 1 4. 0.15
h. (16 · 4) · 4 Commutative Property of Multiplication
Lesson Practice 1 a. real numbers and irrational numbers
16 · (4 · 4)
b. real numbers and rational numbers 16 · 16 256
c. real numbers, rational numbers, integers, whole numbers, and natural numbers
i. - _ 2
d. Distributive Property
1 j. - _ 4
Associative Property of Multiplication Multiply. Multiply.
3q
k. 220 miles
e. Associative Property of Multiplication f. Commutative Property of Addition
© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–1
Saxon Algebra 2
Lesson Practice 1 1. -8 2. -6 3. -6 4. 15 5. 5.57 6. 88.95 7. 2.09, 2.1, 2.3 3 1 _ , 4, _ 8. _ 2 7 5
9. 140 miles
1
15. (6 · 5) · 2 = 6 · (5 · 2) = 6 · 10 = 60, Associative Property of Multiplication; (6 · 5) · 2 = (5 · 6) · 2 = 5 · (6 · 2) = 5 · 12 = 60, Commutative Property of Multiplication and Associative Property of Multiplication 16. A 3 pages
10. 27.5 miles
; 17. a. Suzy: _ 1 minute 3 pages Jonas: _ . 1 minute
11. First subtract 28 - 19, then multiply by -2, then add 6. -12 12. Possible answer: 2(3 · 6), Associative Property of Multiplication; 2(18), Multiply; 36, Multiply. 13. Mount Hood
b. Suzy and Jonas read at the same rate. 18. D 19. a. 1.43 inches b. 25.78 square inches 20. 11 homeruns
14. 6400 square yards
© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–2
Saxon Algebra 2
Lesson 21. Think of 19% as 0.20 - 0.01. Write an expression for the annual interest: 500(0.20 - 0.01). Use the Distributive Property: 500(0.20) - 500(0.01). Multiply: 100 - 5. Subtract: 95. The annual interest is $95.
1
27. 216 28. Student B is correct. Student A did not distribute the 3 to the second term. 29. a. 150 cm2 b. 125 cm3 30. 44 people chose dogs as their favorite pet.
22. a. 16 m b. 48 days 23. Inverse Property of Multiplication, Identity Property of Multiplication 24. a. 55° b. 125° 25. Negative integers are not considered whole numbers. The statement should be “–7 is a real number, a rational number, and an integer.” 26. a. 590,000 b. 200,000 © 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.
LSN 1–3
Saxon Algebra 2
