Adding/Subtracting Integers
( − 8 ) − ( − 7 ) =
-1
-32
The weather report suggested that your city’s temperature increased from – 10 degree celsius to 20 degree celsius. What is the rise in temperature?
30 degrees
2 ⋅ ( − 7 ) =
-14
− 3 + ( − 6 ) =
-9
4 + 7 x 3 - 6 =
19
The Indus Valley Civilization began in 7000 BC and came to an end in 1900 B.C. How long did it last?
5100 years
( − 9 ) ⋅ 9 =
-81
2 − ( − 4 ) =
6
30 - (10 - 8) x (4 + 3)
16
Two churches are situated 8 meters above the sea level and 19 meters below the sea level respectively. What is the distance between the levels of two churches?
27 m
( −72 ) ÷ ( − 8 ) =
9
(−3) + 3 =
0
on the board
(#17)
24
The bear at the zoo ate 133 pounds of food in 7 days. Find the average change in the zoo's tiger food supply each day.
-133 divided by 7 =
Answer: -19
The tiger ate 19 pounds of food each day which is why the value is negative instead of positive.
( − 5 ) ⋅ 0 =
0
4 + (−8) =
-4
on the board
(#20)
1
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
20 ÷ ( − 4 ) =
-5