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Understanding Operations with Negative Numbers (Grade 7)

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Understanding Operations with Negative Numbers

1. 
A negative number multiplied by another negative number is positive.
  1. True
  2. False
 
2. 
When you add two negative numbers together you will always get a positive answer.
  1. True
  2. False
3. 
If a negative number is being multiplied by a positive number, the answer will be a                 number.
  1. positive
  2. negative
 
4. 
(-5)(-7)(5)(-3) gives a                answer.
  1. negative
  2. positive
5. 
When adding integers, if the signs are different, the answer sign is
  1. the sign that comes first
  2. positive
  3. negative
  4. the sign of the number with the largest absolute value
 
6. 
When multiplying integers that have the same sign, your answer will be:
  1. Negative
  2. Positive
  3. It depends on the numbers
  4. It will have the sign of the biggest number
7. 
The product of 8, a, and b is represented by the expression 8ab. If the value of a is negative, what must be said about the value of b in order for the product to remain negative?
  1. b must be negative
  2. b must be positive
  3. b must be 1
  4. the value of be does not matter
 
8. 
Which expression would be evaluated as a negative number?
  1. (3)(-4)(-2)
  2. (-3)(-4)(-2)
  3. (3)(4)(2)
  4. (-3)(-4)(2)
9. 
Consider the problem:

[math]axxb[/math]

If both a and b are negative then the answer will be                               .
  1. positive
  2. negative
  3. equal
  4. not enough information to tell
 
10. 
Which expression will have a negative product?
  1. [math]-1/2xx(-3/4)[/math]
  2. [math]((-1))/2xx-3/4[/math]
  3. [math]1/2xx- ((-3)/4)[/math]
  4. [math](1/2)xx3/((-4)[/math]
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