Ms. Morrill's 3rd Grade Class
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Topic 6 Practice Test

11/30/2017

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Practice Test
  1. (B) 42
  2. (C) 12
  3. (D) 2x9 plus 2x9
  4. (A) Multiply 7 by 8 and then subtract 30.
  5. (A) 7, 14, 21, 28, 35
  6. (B) 18
  7. (C) 5
  8. (B) 28
  9. 8
  10. 36
  11. Use 2x8=16 and add it to 6x8=48
  12. 35 shells
  13. 32 granola bars
  14. 15 combinations
  15. No. All numbers that are multiples of 4 must be even numbers, so 29 is not a multiple of 4. 
  16. Sample Answers: (1x6)+6x6); (2x6)+(5x6); (3x6)+(4x6)
  17. 6 miles; I multiplied 2 x 3 miles = 6 miles
  18. Sample Answers: (1x8) and (3x8); (2x8) and (2x8)
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Lesson 6-9

11/29/2017

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Reteaching 6-9
  1. $15; $5
  2. $26
  3. Find the cost of the T-shirts: 3 x $8 = $24. Then, subtract the total from $50: $50-$24=$26.

Practice 6-9
  1. $12, $8
  2. $26
  3. $14
  4. $17
  5. Problems will vary.
  6. (B) $24
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Lesson 6-8

11/28/2017

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Reteaching 6-8
  1. 9 combinations
  2. 8 combinations
  3. Sample Answer: Draw 3 rows with 4 combinations in each row or 3x4=12 combinations

Practice 6-8
  1. 9 combinations
  2. 15 combinations
  3. 21 combinations
  4. 7 combinations
  5. (C) 12
  6. The number of different flavors of jelly he has. 
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Lesson 6-7

11/27/2017

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Reteaching 6-7
  1. 14; 2, 4, 6, 8, 10, 12, 14
  2. 40; 5, 10, 15, 20, 25, 30, 35, 40
  3. 48; Sample Answer: 3x8=24 and 3x8=24
  4. 45; Sample Answer: 5x5=25 and 4x5=20
  5. 42; Sample Answer: 4x6=24 and 3x6=18
  6. Sample Answer: 3x9=27, 3x9=27, 27+27=54; I chose 3x9 because 6x9 is 6 groups of 9. So I can use 3 groups of 9 twice. 

Practice 6-7
  1. 16
  2. 20
  3. 36
  4. 49
  5. 72
  6. 12
  7. 3
  8. 35
  9. 32
  10. 54
  11. 20
  12. 0
  13. 81
  14. 36
  15. 80
  16. 18 crew members; 6x3=18
  17. 12 crew members; 6x2=12
  18. (D) 63
  19. Rick counted by 5 too many times. He should have counted by 5 just two times: 5, 10.  Or he could have counted by 2s:2, 4, 6, 8, 10.
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Lesson 6-6

11/20/2017

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Reteaching 6-6
  1. 6
  2. 30
  3. 18
  4. 42
  5. 56
  6. 60
  7. 24
  8. 70
  9. 36; Possible number sentence: 6x2x3 = (6x2)x3 = 36  or   6x(2x3)=36
  10. Group 4x2x2 as 4x(2x2)=4x4=16

Practice 6-6
  1. 18
  2. 16
  3. 32
  4. 36
  5. 36
  6. 50
  7. 40
  8. 24
  9. 48
  10. 80
  11. 16 marbles
  12. 60 stamps
  13. Yes. Possible Answers: 6x2x4=6x(2x4)=6x8=48; 48<50
  14. (A) 2
  15. (3x2)x4=6x4=24; 3x(2x4)=3x8=24; 3x2x4=(3x4)x2=12x2=24
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Lesson 6-5

11/17/2017

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Reteaching
  1. 16
  2. 32
  3. 40
  4. 56
  5. 64
  6. 0
  7. 42
  8. 72
  9. 8
  10. 48
  11. 40 pints
  12. Find 7x4=28 and add 28+28=56. So, 7x8=56

Practice
  1. 8
  2. 0
  3. 24
  4. 16
  5. 56
  6. 24
  7. 32
  8. 72
  9. 40
  10. 64
  11. 80
  12. 56
  13. 42
  14. 24
  15. 72
  16. 24 arms
  17. Find the product of 4x7=28 and then add the product to itself. So, 28+28=56
  18. They both are. Since 8 is a multiple of 2 and a multiple of 4, all of the multiples of 8 are also multiples of 2 and 4.
  19. 40 boxes
  20. 56
  21. (B) 48
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Lesson 6-3 & 6-4

11/16/2017

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6-3 was Wednesday's classwork
Reteaching 6-3
  1. 24
  2. 32
  3. 20
  4. 36
  5. 4
  6. 12
  7. 28
  8. 24
  9. 0
  10. 16
  11. Answers will vary. Possible answer: Multiply 2x8=16 and add 16 to itself to get 32.

Practice 6-3
  1. 8
  2. 20
  3. 12
  4. 16
  5. 40
  6. 24
  7. 4
  8. 12
  9. 0
  10. 28
  11. 40
  12. 4
  13. 8
  14. 36
  15. 32
  16. 2x7
  17. 32 people
  18. 36 tickets
  19. 40 practices
  20. The commutative property of multiplication states that the order of the factors does not change the product, so 5x4=20.
  21. (C) 20

6-4 is Thrusday's homework
Reteaching 6-4
  1. 14
  2. 42
  3. 63
  4. 24
  5. 48
  6. 49
  7. 12
  8. 56
  9. 21
  10. 36
  11. 30
  12. 28
  13. 54
  14. 21
  15. 42
  16. Sample Answer: No, 5x4 and 1x4 is 5 groups of 4 plus 1 group of 4. That is 6 groups of 4, not 6 groups of 8.

Practice 6-4
  1. 30
  2. 18
  3. 48
  4. 21
  5. 70
  6. 28
  7. 24
  8. 35
  9. 56
  10. 36
  11. 42
  12. 60
  13. 70
  14. 49
  15. 12
  16. 7x9
  17. 21 days
  18. 42 slices
  19. 48 people
  20. Sample Answer: Add the product 1x6 to 30. 30+6=36, so 6x6=36
  21. (D) 28 minutes
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Lesson 6-2

11/14/2017

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Reteaching
  1. 6
  2. 12
  3. 15
  4. 3
  5. 27
  6. 54
  7. 21
  8. 0
  9. 40
  10. 9
  11. Multiply 2x8=16 and add the factor 8. 16+8=24. So, 3x8=24

Practice
  1. 3
  2. 21
  3. 18
  4. 24
  5. 50
  6. 6
  7. 12
  8. 0
  9. 14
  10. 9
  11. 15
  12. 30
  13. 6
  14. 27
  15. 27
  16. 18 wheels
  17. 15 tickets
  18. 4+4+4=12 or 3+3+3+3=12
  19. 12
  20. Both are correct. The commutative property of multiplication states the order of the factors does not change the product. 
  21. (C) 24
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Lesson 6-1

11/13/2017

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Reteaching 6-1
1. Sample Answers: (3x3) and (1x3), or (2x3) and (2x3)
2. Sample Answers: (2x6) and (3x6), or (1x6) and (4x6)
3. The fact is 2x7. The number sentence is 4x7=(2x7)+(2x7).

Practice 6-1
1. Sample Answers: (5x6) and (3x6)  /  (4x6) and (4x6)  /  (6x6) and (2x6)
2. Sample Answers: (3x9) and (1x9)  /  (2x9) and (2x9)
3. 8x3 = (2x3) + (6x3)
4. 7x7 = (3x7) and (4+7)
5. Array should show 6x9. 6x9 = (2x9) + (4x9)
6. (D) 5
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