Integer Operations
Solve: -18 + 7
-11
Solve: 0.75 + 0.4
1.15
Solve: 1/2 + 1/4
3/4
Four out of eight dogs weigh less than 20 pounds. What is the decimal equivalent for the number of dogs weighing under 20 pounds?
0.5
What is the additive inverse of 8?
-8
A submarine is 19 meters below sea level. It rises 7 meters, then descends 4 meters. What is the final depth of the submarine?
-16 meters
Solve: 3.2 - 5.7
-2.5
Solve: 3/4 - 5/6
-1/12
A catering company loses $110 as a result of a delay. The 4 owners share the loss equally. Write and solve a quotient to represent each owners loss.
-110 / 4 = $-27.5
What is absolute value? Give an example.
Absolute value is the distance from zero. It turns everything positive. Ex: absolute value of -3 is 3
Solve: -7 - (-3) + 2
-2
In the morning, the temperature is 6.3 degrees above zero. By evening it drops 9.1 degrees. What is the evening temperature?
-2.8
(-2/3) x 9
-6
Javier had $305. His bank charges $7.50 each month when the balance is below $400. If he makes no deposits of withdrawals, how much is in his account after 4 months?
$275
What is an integer?
A positive or negative whole number or zero.
Henry runs up 10 flights of stairs. Write an integer representing the distance Henry must run down so the sum is zero.
-10
Luis's wind machine changes the reading by 0.35 miles per hour each minute for 8 minutes. What is the total change in wind-speed reading after 8 minutes?
2.8 mph
What is 4/9 as a decimal?
0.4444...
Johnathan pays $120 per month for gym plus $35 per week for a trainer. A new gym offers $280 per month that includes a weekly trainer session. Would Johnathan save or pay more by switching?
He would pay $20 more a month if he switches
What is the difference between a terminating and a repeating decimal?
Terminating ends in zero. Repeating has a pattern that goes on forever.
Maya starts at -3 miles relative to a trail marker, then hikes forward 5 miles. What is her new position?
2 miles
A hot air balloon descends 250.8 feet in 9.5 minutes. Write an integer to represent the change in location after 1 minute.
-26.4 feet per minute
Maya records her movement on a mountain hike: descends 1 1/3 miles, then climbs 2 1/4 miles, then descends another 3/4 mile. What is the total change in elevation from the starting point?
1/6 mile
Create and solve an equation to represent this scenario: A hiker begins at -1.75 miles from a marker, hikes forward x miles, then ends at 2.5 miles from the marker. What is x?
-1.75 + x = 2.5
x = 4.25
What is an irrational (not rational) number? Give an example
A decimal that goes on forever with no pattern. EX: 3.14159...