Rational Number Practice

solve 

• - 2/9

• - 5/9 

• 2/9

• no there

What is the simplified value of the expression below?

-2.6 + 5.8

• -8.4

• -3.2

• 3.2

• 8.4

On Tuesday in Washington D.C. the temperature at 8am was  -8 degrees.  At 1pm, it was 27 degrees.  By how many degrees did the temperature change from morning to evening?

• 21
• -35
• 35
• 19

A student has $78 in his checking account. If the student spends $12 on lunch, which number could be combined with the amount left in the account to make zero?

• –90

• –78

• –66

• –12

Match the following models with the correct addition and subtraction expressions.

• 7 - 4

• 
• 4-7

• 
• 7 + (-4)

• 
• -4 - (-7)

• 
• -4 + 7

• 

Answer explanation

Order matters in models! Be sure to look at where the expression begins.

A football team gained 9 yards on one play and then lost 22 yards on the next. Write a sum of integers to find the overall change in field position.

• -9 + (-22) = -13

• 9 + (-22) = 13

• 9 + (-22) = -13

• none

1.  Rosa was hiking near the Dead Sea.  She began her hike at an elevation of -600 feet and ended the hike at 92 feet. What was the change in her elevation?

• she hiked up 508 feet
• she hiked down 508 feet
• she hiked up 692 feet
• she hiked down 692 feet

On a number line, what is the distance between -17 and 9?

• 8

• -8

• -26

• 26

Match the following integer addition and subtraction expressions:

• -5+2

• -4-7

• 5+3

• -5-(-2)

• 8-(-1)

• 8+1

• 9+(-3)

• 5-(-3)

• -4+(-7)

• 9-3