Exam 7: Signed Numbers

Give a written response. -You are given information about three numbers, which you are to arrange from smallest to largest. Number A: sign is negative; Absolute value is: 1.2 Number B: sign is negative; Absolute value is: 2.3 Number C: sign is positive; Absolute value is: 1.7 What will the order be? Explain.

Simplify. - $6 \cdot(-3)+5 \cdot(-3)$

Add. - $(-3.992)+(-5.67)+0.52$

Solve the problem. -Which is colder: a temperature of -15 degrees Fahrenheit or a temperature of -18 degrees Fahrenheit?

Perform the operation. Write the answer as a mixed number. - $\frac{13}{3}-\frac{9}{8}$

Decide if the inequality is correct. - $-9>5$

Arrange the numbers from smallest to largest. - $4.9,-4 \frac{1}{2}, 4.8,0,-4.4$

Find the larger number. --4 and -8

Determine the sign and the absolute value of the number. - $\frac{9}{10}$

Graph the numbers on the number line. - $-8,-6,-4,-2$

Solve. Express your answer as a signed number. -The population of a certain city decreased by 23,021 in 10 years. Find the average annual change in population.

Find the absolute value. - $|-5.0|$

Divide. - $0.5 \div(-0.5)$

Decide if the inequality is correct. - $-6.8<-6.9$

Divide. - $48 \div(7.5)$

Multiply. - $-43 \cdot (-28)$

Simplify. - $-2 \cdot(-4-1.2)$

Insert parentheses, if needed, to make the expression on the left equal to the number on the right. - $480 \div 12-3+4=33$

Simplify. - $(5-15)^{2} \div(3-4)^{2}$

Subtract. - $0.52-0.40$