The temprature in the night was -10oC. If the temprature rises 4oC in the morning, what is the new temprature.
a) 6 oC
b) 9 oC
c) -7 oC
d) –6 oC
Solution: Night temprature = 10 oC
Morning temprature = 4 oC
–10 oC + 4 oC = – 6 oC
3 – 7 =………..
a) 4
b) – 4
c)
d) 2
The sum of two integers is +54. One of them is – 11. Find the other?
a) 43
b) – 65
c) 65
d) 31
Solution:– 11 + X = +54
X = 54 +11
Two cars started from the same point. First car went towards the east and covered 44 km in an hour. The second car went towards the west and covered 62 km in 1 hour. Find the distance between the two cars after an hour.
a) 106
b) 18
c) 22
d) 39
Solution: east direction= 44 km/h
West direction = 62 km /h
44 + 62 =106 km/h
When we add two integers, the sum is always an integer. It is known as the………..
a) closure law of integers under addition
b) commutative law
c) Associative law
Explanation:– 2 + (+7) = –2 + 7 = +5
When we change the order of two integers, the sum remain the same. It is known as the ………… under addition.
a) Closure law of integers under addition
b) Commutative law
c) Associative law
Explanation:– 3 + 5 = + 5 + (–3) = 2
Option d:-6
by at 2024-07-30 04:26:12