Q1. In addition and subtraction of two integers , sign of the answer depends upon
(a) Smaller number (b) Their difference (c) Their sum (d) Greater numerical value
Q2. Sum of two negative number is always
(a) Positive (b) Negative (c) 0 (d) 1
Q3. Sum of two Positive number is always
(a) Negative (b) Positive (c) 1 (d) 0
Q4. Sum of – 36 and 29 is
(a) –65 (b) 65 (c) –7 (d) 7
Q5. Sum of –19 and –21 is
(a) –40 (b) 40 (c) 2 (d) –2
Q6. Which of the following statement is false:
(a) –7 + (–6 ) = –13 (b) –5 + 1 = 4 (c) 2 + (–1 ) = 1
(d) 8 + (–9 ) = –1
Q7. The pair of integers whose sum is –5
(b) 1, –4 (b) –1 , 6 (c) –3 , –2 (d) 5, 0
Q8. What integers or number should be added to –5 to get 4
(a) 1 (b) –1 (c) –9 (d) 9
Q9 . What will be the additive inverse of –5
(a) –6 (b) –4 (c) 3 (d) 5
Q10. What will be the additive inverse of 7
(a) –7 (b) –6 (c) –5 (d) –4
Q11. Predecessor of –9 is
(a) –8 (b) 8 (c) –10 (d) 10
Q12. Successor of –1 is
(a) –2 (b) 0 (c) 1 (d) 2
Q13. The value of 6 – ( –3 ) is
(a) 3 (b) –9 (c) –3 (d) 9
Q14. The value of 26 – 30 is equal to
(a) 4 (b) –4 (c) –56 (d) 56
Q15. Which of the following statement is true
(a) 7 – 4 = 4 – 7 (b) 7 – 4 > 4 – 7 (c) 7 – 4 < 4 – 7 (d) 7 – 4 = – 3
THE CORRECT AND BEST ANSWER WILL BE MARKED AS BRAINLIEST ANSWER
Answers
Answer:
Q1. In addition and subtraction of two integers , sign of the answer depends upon
(a) Smaller number (b) Their difference (c) Their sum (d) Greater numerical value
Q2. Sum of two negative number is always
(a) Positive (b) Negative (c) 0 (d) 1
Q3. Sum of two Positive number is always
(a) Negative (b) Positive (c) 1 (d) 0
Q4. Sum of – 36 and 29 is
(a) –65 (b) 65 (c) –7 (d) 7
Q5. Sum of –19 and –21 is
(a) –40 (b) 40 (c) 2 (d) –2
Q6. Which of the following statement is false:
(a) –7 + (–6 ) = –13 (b) –5 + 1 = 4 (c) 2 + (–1 ) = 1
(d) 8 + (–9 ) = –1
Q7. The pair of integers whose sum is –5
(b) 1, –4 (b) –1 , 6 (c) –3 , –2 (d) 5, 0
Q8. What integers or number should be added to –5 to get 4
hl
Question 1:
Following number line shows the temperature in degree celsius (°C) at different places on a particular day.
(a) Observe this number line and write the temperature of the places marked on it.
(b) What is the temperature difference between the hottest and the coldest places among the above?
(c) What is the temperature difference between Lahulspiti and Srinagar?
(d) Can we say temperature of Srinagar and Shimla taken together is less than the temperature at Shimla? Is it also less than the temperature at Srinagar?
ANSWER:
(a) By observing the given data, the temperatures of these cities are as follows.
Lahulspiti
:
−8°C
Srinagar
:
−2°C
Shimla
:
5°C
Ooty
:
14°C
Bangalore
:
22°C
(b) Temperature at the hottest place, i.e., Bangalore = 22°C
Temperature at the coldest place, i.e., Lahulspiti = −8°C
Temperature difference = 22°C − (−8°C)
= 30°C
Therefore, the temperature difference between the hottest and the coldest places is 30ºC.
(c) Temperature at Lahulspiti = −8°C
Temperature at Srinagar = −2°C
Temperature difference = −2°C − (−8°C)
= 6°C
Therefore, the temperature difference between Lahulspiti and Srinagar is 6ºC.
(d) Temperature at Srinagar = −2°C
Temperature at Shimla = 5°C
Temperature of Srinagar and Shimla taken together = −2°C + 5°C
= 3°C
3°C < 5°C
3°C < Temperature of Shimla
Yes, the temperature of Srinagar and Shimla taken together is less than the temperature of Shimla.
However, 3°C > −2°C
Hence, the temperature of Srinagar and Shimla taken together is not less than the temperature of Srinagar.
Answer:
1. greater numerical value
2. negative
3. positive
4. -7
5. -40
6.-5+1=4 is false
7. -3,-2
8. 9
9. 5
10. -7
11.-10
12.1
13. 9
14. -4
15. 7-4 is greater than 4-7