quarter 1 review case 21 benchmark
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Quarter 1 Review Case 21 Benchmark. 7 th Grade Mathematics. Question 1. Solution 1. C If you distribute answer C the expressions will be equivalent. Question 2. Solution 2. D - PowerPoint PPT PresentationTRANSCRIPT
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QUARTER 1 REVIEWCASE 21
BENCHMARK7th Grade Mathematics
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QUESTION 1
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SOLUTION 1
CIf you distribute answer C the expressions will be equivalent
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QUESTION 2
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SOLUTION 2
D
Answer A is wrong and answer C is wrong because 7m – 28 is not equal to 7m + 28. When you COMBINE LIKE TERMS for answer D, you get the correct answer. -5m – 29 + 12m + 17m – 29 + 17m - 28
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QUESTION 3
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SOLUTION 3
A
This equilateral triangle has 3 sides. The perimeter is 3x + 6 and it must be cut up into 3 equal pieces. So if we do , we will get x + 2 which is the answer the same as answer A.
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QUESTION 4
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SOLUTION 4
D
If you simplify all the answers they will all come out to 10a – 4. However D is 4 – 10a. Answers A B and C have a positive coefficient while D has a negative coefficient.
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QUESTION 5
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QUESTION 5
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SOLUTION 5
D
This problem asks you to use the distributive property to solve all the answers. When you distribute (double rainbow), you should find that D is the only answer possible.
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QUESTION 6
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SOLUTION 6
B
Percent means out of 100. So 37.5% is equal to . Mrs. Barrett always asks you what “of” usually means and it is usually multiplication. Therefore,
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QUESTION 7
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SOLUTION 7
C
Increased means to add. We are adding 12.5% of M not just 12.5 so what is 12.5% of M?
12.5% of M = 0.125M
Therefore M increased by 12.5% is M + 0.125M
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QUESTION 8
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SOLUTION 8B
The question asks you who has the MOST. This means we are comparing numbers.
Paul ate 4 out of 6 = 4/6 = 0.66Yasmine ate 0.375Tracy ate 55% = 0.55Ronnie ate 5/6. Ronnie ate more than Paul so Ronnie is now the answer.
Yasmine ate the least so she has the most left!
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QUESTION 9
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SOLUTION 9D
4(x – 3) – 7x ≥ 6 (Distribute)4x – 12 – 7x ≥ 6 (Combine Like Terms)-3x – 12 ≥ 6 (Add 12 to both sides)-3x ≥ 18 (Divide by -3 and flip the sign)X ≤ -6
Remember when you multiply or divide by a negative number, your sign must flip
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QUESTION 10
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SOLUTION 10D
4x + 9 ≥ -11 (Subtract 9 to both sides)4x ≥ -20 (-11 – 9 =-20 INTEGER RULES)X ≥ -5 (Divide by 4)
Since 4 is a positive number, the sign stays the same.
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QUESTION 11
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SOLUTION 11A
We want an answer that reflects the entire student body as much as possible. Answer C and D would not fit. Answer A only asks students that eat in the cafeteria for lunch. Answer B would be the best choice since it has the word “randomly.” Answer B asks different types of students so it’s a better representation.
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QUESTION 12
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SOLUTION 12C
C is the only answer that is True because out of the two different classes, basketball has the highest numbers.