Question 1

Simplify.
-$\frac{-21}{-20}$

Accepted Answer

A)  0 
B)  1 
C)  $-\frac{21}{20}$ 
D)  $\frac{21}{20}$ 
A)  0 
B)  1 
C)  $-\frac{21}{20}$ 
D)  $\frac{21}{20}$

Question 2

Simplify.
-$(5.8-6) \cdot(2+1.6)$

Accepted Answer

A)  -0.72 
B)  1.2 
C)  -4.6 
D)  -15.8 
A)  -0.72 
B)  1.2 
C)  -4.6 
D)  -15.8

Question 3

Solve the problem.
-The temperature at the South Pole was $34^{\circ}$ at 8 A.M. At 3 P.M., it was $-50^{\circ}$. By how many degrees did the temperature drop?

Accepted Answer

A)  $-84^{\circ}$ 
B)  $-16^{\circ}$ 
C)  $16^{\circ}$ 
D)  $84^{\circ}$ 
A)  $-84^{\circ}$ 
B)  $-16^{\circ}$ 
C)  $16^{\circ}$ 
D)  $84^{\circ}$

Question 4

Arrange the numbers from smallest to largest.
-$0,4.7,-7.3,-5 \frac{1}{2}, 4.3$

Accepted Answer

A)  $-5 \frac{1}{2},-7.3,0,4.3,4.7$ 
B)  $0,-7.3,-5 \frac{1}{2}, 4.3,4.7$ 
C)  $-5 \frac{1}{2}, 0,4.3,4.7,-7.3$ 
D)  $-7.3,-5 \frac{1}{2}, 0,4.3,4.7$ 
A)  $-5 \frac{1}{2},-7.3,0,4.3,4.7$ 
B)  $0,-7.3,-5 \frac{1}{2}, 4.3,4.7$ 
C)  $-5 \frac{1}{2}, 0,4.3,4.7,-7.3$ 
D)  $-7.3,-5 \frac{1}{2}, 0,4.3,4.7$

Question 5

Combine.
-$17+(-4)-12$

Accepted Answer

A)  33 
B)  1 
C)  25 
D)  -1 
A)  33 
B)  1 
C)  25 
D)  -1

Question 6

Multiply.
-$(-14)(-6)$

Accepted Answer

A)  -8 
B)  8 
C)  84 
D)  -84 
A)  -8 
B)  8 
C)  84 
D)  -84

Question 7

Decide if the inequality is correct.
-$-2<-5$

Accepted Answer

A) True 
 B)False

Question 8

Simplify.
-$\frac{(-3)^{2} \cdot(-8)}{6}$

Accepted Answer

A)  12 
B)  4 
C)  -12 
D)  -4 
A)  12 
B)  4 
C)  -12 
D)  -4

Question 9

Decide if the inequality is correct.
-$-3 \frac{1}{5}<0$

Accepted Answer

A) True 
 B)False

Question 10

Combine.
-$11+9-(-7)$

Accepted Answer

A)  -27 
B)  13 
C)  27 
D)  -5 
A)  -27 
B)  13 
C)  27 
D)  -5

Question 11

Determine the sign and the absolute value of the number.
--6.3

Accepted Answer

A)  Sign: + ; absolute value: -6.3 
B)  Sign: +; absolute value: 6.3 
C)  Sign: -; absolute value: 6.3 
D)  Sign: -; absolute value: -6.3 
A)  Sign: + ; absolute value: -6.3 
B)  Sign: +; absolute value: 6.3 
C)  Sign: -; absolute value: 6.3 
D)  Sign: -; absolute value: -6.3

Question 12

Multiply.
-$-0.1 \cdot(-14.8)$

Accepted Answer

A)  -14.9 
B)  14.9 
C)  1.48 
D)  -14.7 
A)  -14.9 
B)  14.9 
C)  1.48 
D)  -14.7

Question 13

Multiply.
-$-13 \cdot(-13)$

Accepted Answer

A)  -182 
B)  182 
C)  -169 
D)  169 
A)  -182 
B)  182 
C)  -169 
D)  169

Question 14

Insert parentheses, if needed, to make the expression on the left equal to the number on the right.
-$60 \div(-4)-1-7=-19$

Accepted Answer

A)  $60 \div(-4-1-7)=-19$ 
B)  $60 \div(-4)-(1-7)=-19$ 
C)  $60 \div(-4-1)-7=-19$ 
D)  $60 \div(-4)-1-7=-19$ 
A)  $60 \div(-4-1-7)=-19$ 
B)  $60 \div(-4)-(1-7)=-19$ 
C)  $60 \div(-4-1)-7=-19$ 
D)  $60 \div(-4)-1-7=-19$

Question 15

Combine.
-$1.019-(-0.541)+(-0.625)$

Accepted Answer

A)  1.103 
B)  0.935 
C)  -1.103 
D)  -0.147 
A)  1.103 
B)  0.935 
C)  -1.103 
D)  -0.147

Question 16

Simplify.
-$-4(3-11)+(-5)^{2}+(-6)(-9)$

Accepted Answer

A)  56 
B)  61 
C)  3 
D)  111 
A)  56 
B)  61 
C)  3 
D)  111

Question 17

Simplify.
-$\frac{2^{2}-(-10)}{2}$

Accepted Answer

A)  -14 
B)  -5 
C)  7 
D)  14 
A)  -14 
B)  -5 
C)  7 
D)  14

Question 18

Multiply.
-$-4 \cdot(-0.4) \cdot 7$

Accepted Answer

A)  112 
B)  -112 
C)  11.2 
D)  -11.2 
A)  112 
B)  -112 
C)  11.2 
D)  -11.2

Question 19

Multiply.
-$10 \cdot(-2) \cdot(-7)$

Accepted Answer

A)  1 
B)  -140 
C)  -13 
D)  140 
A)  1 
B)  -140 
C)  -13 
D)  140

Question 20

Solve the problem.
-A bike road race starts at an elevation of $930 \mathrm{ft}$ and passes through 5 stages where the elevation changes by $-604 \mathrm{ft},-515 \mathrm{ft}, 107 \mathrm{ft}, 477 \mathrm{ft}$, and $-433 \mathrm{ft}$. At what elevation does the race end?

Accepted Answer

A)  $-3066 \mathrm{ft}$ 
B)  $-38 \mathrm{ft}$ 
C)  $3066 \mathrm{ft}$ 
D)  $2093 \mathrm{ft}$ 
A)  $-3066 \mathrm{ft}$ 
B)  $-38 \mathrm{ft}$ 
C)  $3066 \mathrm{ft}$ 
D)  $2093 \mathrm{ft}$

Simplify. - $\frac{-21}{-20}$

Simplify. - $(5.8-6) \cdot(2+1.6)$

Solve the problem. -The temperature at the South Pole was $34^{\circ}$ at 8 A.M. At 3 P.M., it was $-50^{\circ}$ . By how many degrees did the temperature drop?

Arrange the numbers from smallest to largest. - $0,4.7,-7.3,-5 \frac{1}{2}, 4.3$

Combine. - $17+(-4)-12$

Multiply. - $(-14)(-6)$

Decide if the inequality is correct. - $-2<-5$

Simplify. - $\frac{(-3)^{2} \cdot(-8)}{6}$

Decide if the inequality is correct. - $-3 \frac{1}{5}<0$

Combine. - $11+9-(-7)$

Determine the sign and the absolute value of the number. --6.3

Multiply. - $-0.1 \cdot(-14.8)$

Multiply. - $-13 \cdot(-13)$

Insert parentheses, if needed, to make the expression on the left equal to the number on the right. - $60 \div(-4)-1-7=-19$

Combine. - $1.019-(-0.541)+(-0.625)$

Simplify. - $-4(3-11)+(-5)^{2}+(-6)(-9)$

Simplify. - $\frac{2^{2}-(-10)}{2}$

Multiply. - $-4 \cdot(-0.4) \cdot 7$

Multiply. - $10 \cdot(-2) \cdot(-7)$

Solve the problem. -A bike road race starts at an elevation of $930 \mathrm{ft}$ and passes through 5 stages where the elevation changes by $-604 \mathrm{ft},-515 \mathrm{ft}, 107 \mathrm{ft}, 477 \mathrm{ft}$ , and $-433 \mathrm{ft}$ . At what elevation does the race end?

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Exam 7: Signed Numbers

Simplify. - −21−20\frac{-21}{-20}−20−21​

Simplify. - (5.8−6)⋅(2+1.6)(5.8-6) \cdot(2+1.6)(5.8−6)⋅(2+1.6)

Solve the problem. -The temperature at the South Pole was 34∘34^{\circ}34∘ at 8 A.M. At 3 P.M., it was −50∘-50^{\circ}−50∘ . By how many degrees did the temperature drop?

Arrange the numbers from smallest to largest. - 0,4.7,−7.3,−512,4.30,4.7,-7.3,-5 \frac{1}{2}, 4.30,4.7,−7.3,−521​,4.3

Combine. - 17+(−4)−1217+(-4)-1217+(−4)−12

Multiply. - (−14)(−6)(-14)(-6)(−14)(−6)

Decide if the inequality is correct. - −2<−5-2<-5−2<−5

Simplify. - (−3)2⋅(−8)6\frac{(-3)^{2} \cdot(-8)}{6}6(−3)2⋅(−8)​

Decide if the inequality is correct. - −315<0-3 \frac{1}{5}<0−351​<0

Combine. - 11+9−(−7)11+9-(-7)11+9−(−7)