## Math Answers!

Practice Test
- (B) 42
- (C) 12
- (D) 2x9 plus 2x9
- (A) Multiply 7 by 8 and then subtract 30.
- (A) 7, 14, 21, 28, 35
- (B) 18
- (C) 5
- (B) 28
- 8
- 36
- Use 2x8=16 and add it to 6x8=48
- 35 shells
- 32 granola bars
- 15 combinations
- No. All numbers that are multiples of 4 must be even numbers, so 29 is not a multiple of 4.
- Sample Answers: (1x6)+6x6); (2x6)+(5x6); (3x6)+(4x6)
- 6 miles; I multiplied 2 x 3 miles = 6 miles
- Sample Answers: (1x8) and (3x8); (2x8) and (2x8)
0 Comments
Reteaching 6-9
- $15; $5
- $26
- Find the cost of the T-shirts: 3 x $8 = $24. Then, subtract the total from $50: $50-$24=$26.
Practice 6-9 - $12, $8
- $26
- $14
- $17
- Problems will vary.
- (B) $24
Reteaching 6-8
- 9 combinations
- 8 combinations
- Sample Answer: Draw 3 rows with 4 combinations in each row or 3x4=12 combinations
Practice 6-8 - 9 combinations
- 15 combinations
- 21 combinations
- 7 combinations
- (C) 12
- The number of different flavors of jelly he has.
Reteaching 6-7
- 14; 2, 4, 6, 8, 10, 12, 14
- 40; 5, 10, 15, 20, 25, 30, 35, 40
- 48; Sample Answer: 3x8=24 and 3x8=24
- 45; Sample Answer: 5x5=25 and 4x5=20
- 42; Sample Answer: 4x6=24 and 3x6=18
- 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 - 16
- 20
- 36
- 49
- 72
- 12
- 3
- 35
- 32
- 54
- 20
- 0
- 81
- 36
- 80
- 18 crew members; 6x3=18
- 12 crew members; 6x2=12
- (D) 63
- 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.
Reteaching 6-6
- 6
- 30
- 18
- 42
- 56
- 60
- 24
- 70
- 36; Possible number sentence: 6x2x3 = (6x2)x3 = 36 or 6x(2x3)=36
- Group 4x2x2 as 4x(2x2)=4x4=16
Practice 6-6 - 18
- 16
- 32
- 36
- 36
- 50
- 40
- 24
- 48
- 80
- 16 marbles
- 60 stamps
- Yes. Possible Answers: 6x2x4=6x(2x4)=6x8=48; 48<50
- (A) 2
- (3x2)x4=6x4=24; 3x(2x4)=3x8=24; 3x2x4=(3x4)x2=12x2=24
Reteaching
- 16
- 32
- 40
- 56
- 64
- 0
- 42
- 72
- 8
- 48
- 40 pints
- Find 7x4=28 and add 28+28=56. So, 7x8=56
Practice - 8
- 0
- 24
- 16
- 56
- 24
- 32
- 72
- 40
- 64
- 80
- 56
- 42
- 24
- 72
- 24 arms
- Find the product of 4x7=28 and then add the product to itself. So, 28+28=56
- 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.
- 40 boxes
- 56
- (B) 48
6-3 was Wednesday's classwork
Reteaching 6-3 - 24
- 32
- 20
- 36
- 4
- 12
- 28
- 24
- 0
- 16
- Answers will vary. Possible answer: Multiply 2x8=16 and add 16 to itself to get 32.
Practice 6-3 - 8
- 20
- 12
- 16
- 40
- 24
- 4
- 12
- 0
- 28
- 40
- 4
- 8
- 36
- 32
- 2x7
- 32 people
- 36 tickets
- 40 practices
- The commutative property of multiplication states that the order of the factors does not change the product, so 5x4=20.
- (C) 20
6-4 is Thrusday's homework Reteaching 6-4 - 14
- 42
- 63
- 24
- 48
- 49
- 12
- 56
- 21
- 36
- 30
- 28
- 54
- 21
- 42
- 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 - 30
- 18
- 48
- 21
- 70
- 28
- 24
- 35
- 56
- 36
- 42
- 60
- 70
- 49
- 12
- 7x9
- 21 days
- 42 slices
- 48 people
- Sample Answer: Add the product 1x6 to 30. 30+6=36, so 6x6=36
- (D) 28 minutes
Reteaching
- 6
- 12
- 15
- 3
- 27
- 54
- 21
- 0
- 40
- 9
- Multiply 2x8=16 and add the factor 8. 16+8=24. So, 3x8=24
Practice - 3
- 21
- 18
- 24
- 50
- 6
- 12
- 0
- 14
- 9
- 15
- 30
- 6
- 27
- 27
- 18 wheels
- 15 tickets
- 4+4+4=12 or 3+3+3+3=12
- 12
- Both are correct. The commutative property of multiplication states the order of the factors does not change the product.
- (C) 24
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 = (2x 3) + (6x3)4. 7x 7 = (3x7) and (4+7)5. Array should show 6x9. 6x9 = (2x9) + (4x9) 6. (D) 5 |
## enVisionMATHenVision Math is a Common Core Math Curriculum. It encompasses both procedural and conceptual understanding of mathematics. ## Archives
March 2018
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