MATHEMATICS (QUESTIONNAIRES) > Operation On Integers > Flashcards
Operation On Integers Flashcards
Solve
-18-11
-19
Solve
12+(-6)
6
Solve
-10+1
-9
Solve
-11+ -8
-19
Solve
-7 - (-3)
-4
Solve
-5-9
-14
Solve
10+(-14)
-4
Solve
7 - 15
8
Solve
-13 + 1
-12
Solve
-8 + -9
Solve
3-11
-8
Solve
14 + (-3)
11
Solve
6-(-6)
12
Solve
-7 + 13
6
Solve
4 - (-9)
13
Solve
-8 - (-1)
-7
Solve
-8 + 20 + (-14)
-2
Solve
15-22+16
9
Solve
-10-13+8
-15
Solve
14+(-19)-13
-18
Solve
-11+18-30
-21
Solve
-20-10-15
-45
A Roman emperor was born inB.C. and died inA.D. How many years did he live?
77 years
A bomb displaces the oil in a well fromm deep and raises it to a deposit placem above ground level. How far does the oil displace?
1023 meters
What is the change in temperature a customer in a grocery store experiences when they walk from the chilled vegetable section atºC to the frozen fish section which is set toºC?
22 degrees celcius
The air temperature in the atmosphere decreases at the rate ofºC everymeters. What height would a plain have to fly to experience a temperature ofºC? The temperature isº C at sea level.
2,700 m
In a well, there isliters of water. At the top, there is a pipe that depositsl per minute into the well, and at the bottom, there is another pipe that withdrawsl per minute from the same well. How many liters of water will there be in the well afterminutes of the pipes functioning?
725
At 3 p.m., the temperature was 9 degrees F. By 11 p.m., it dropped 31 degrees F. What was the temperature at 11 p.m.?
-22 degrees
A submarine submerged at a depth of -40 feet dives 57 feet more. What is the new depth of the submarine?
97 ft below sea level
Jane gained 25 points in the first round of a game. In the second round she lost 40 points and on the third round she gained 10 points. Write and evaluate an expression to find how many points Jane gained or lost.
-5
Tina wrote a check for $35 on Monday. On Tuesday she made of withdrawal of $60 and on Wednesday she deposited $75. What is the change in Tina’s account after the three days?
-20
A stock gained 2 points on Monday, lost 5 points on Tuesday, lost 1 point on Wednesday, gained 4 points on Thursday, and lost 6 points on Friday. How much was the gain or loss?
-6
Monday’s high temperature was 6 degrees C. The low temperature was -3 degrees C. What was the difference between the high and low temperture?
9 degrees
The temperature changed from 5 degrees C at 6 p.m. to -2 degree C at midnight. How much did the temperature decrease?
-7
A diver’s elevation is -5 feet relative to sea level. A school of fish is swimming at an elevation of -12 feet. What is the difference between the diver and the school of fish?
7 feet
The temperature in Montreal was -15 degrees C. In New York the temperature was 11 degrees C. How many degrees warmer was the temperature in NewYork?
26 degrees
You play a game where you score -6 points on the first turn and on each of the next three turns. What is your score after those four turns?
-18
The outdoor temperature declines 3 degrees each hour for 5 hours. What is the change in temperature at the end of those 5 hours?
-15
A football team loses 4 yards on each of five plays. What is the team’s total loss?
-20 yards
A submarine is at -125 feet in the ocean. The submarine makes three dives at 50 feet each. At what level is the submarine after the three dives?
-275
Mrs. Atkins makes 3 withdrawals of $25. What is the change in her account?
-75
Four investors lost 24 percent of their combined investment in a company. In average, how much did each investor lose?
-6
The temperature in a potter’s kiln dropped 760 degrees in 4 hours. On average, how much did the temperature drop per hour?
-190
Example 1:Shyak has overdrawn his checking account by Rs.38. The bank debited him Rs.20 for an overdraft fee. Later, he deposited Rs.150. What is his current balance?
Solution:Given,
Total amount deposited= Rs. 150
Amount overdrew by Shyak= Rs. 38
⇒ Debit amount = -38 [Debit is represented as negative integer]
Amount charged by bank= Rs. 20
⇒ Debit amount= -20
Total amount debited = (-38) + (-20) = -58
Current balance= Total deposit +Total Debit
⇒150 + (–58) = 92 [Subtract and give the sign of greater number]
Hence, the current balance is Rs. 92.
Example 2:Anna is a microbiology student. She was doing research on optimum temperature for the survival of different strains of bacteria. Studies showed that bacteria X need optimum temperature of -31˚C while bacteria Y need optimum temperature of -56˚C. What is the temperature difference?
Solution:Given,
Optimum temperature for bacteria X = -31˚C
Optimum temperature for bacteria Y= -56˚C
Temperature difference= Optimum temperature for bacteria X – Optimum temperature for bacteria Y
⇒ (-31) – (-56)
⇒ -31 + 56 = 25 [Subtract and give the sign of greater number]
Hence, temperature difference is 25˚C.
Example 3:A submarine submerges at the rate of 5 m/min. If it descends from 20 m above the sea level, how long will it take to reach 250 m below sea level?
Solution:
Given,
Initial position = 20 m (above sea level)
Final position = 250 m (below sea level)
Total depth it submerged = (250+20) = 270 m
Thus, the submarine travelled 270 m below sea level.
Time taken to submerge 1 meter = 1/5minutes
Time taken to submerge 270 m = 270 (1/5) = 54 min
The Indus Valley Civilization began in 7000 BC and came to
an end in 1900 B.C. How long did it last?
5100 years
Metal Gallium is a liquid at room temperature. Its melting
point is about 30°C. The freezing point of water is 0°C. How
much warmer is the melting point of Gallium than the
freezing point of water?
30 degrees
warmer
A bird descends at the rate of 10 ft/min. How long will it
take for the bird to reach the ground if it is flying at 300 ft
high in the sky?
30 minutes
In a Math test (+2) marks are given for every correct
answer and 1 mark is given for every incorrect answer
Zayn gets only 12 of his answers correct out of 18 questions
on the test. What will be his score?
18
