Question

Those who answer all the questions will be marked brainliest



FILL IN THE BLANKS: Question 9.
__________ ÷ (- 10) = 0

FILL IN THE BLANKS: Question 10.
(- 8) + (- 8) + (- 8) =_______ × (- 8)

FILL IN THE BLANKS: Question 11.
(- 23) × (42) = (- 42) ×______

FILL IN THE BLANKS: Question 12.
If we multiply six negative integers and six positive integers, then the resulting integer is___

FILL IN THE BLANKS: Question 13.
We get additive inverse of an integer a, when we multiply it by ___ .

FILL IN THE BLANKS: Question 14.
3 × (- 1) × (- 15) =_______.

FILL IN THE BLANKS: Question 15.
______ × (- 1) = – 35

FILL IN THE BLANKS: Question 16.
____ × (- 93) = 93

FILL IN THE BLANKS: Question 17.
When we divide a negative integer by a positive integer, we divide them as whole numbers and put a ____ sign before quotient.

FILL IN THE BLANKS: Question 18.
65 ÷ (- 13) =_____.

FILL IN THE BLANKS: Question 19.
_____ ÷ (-1) = (- 83)

FILL IN THE BLANKS: Question 20.
113 ÷ ____ = (- 1)

FILL IN THE BLANKS: Question 21.
(-28) ÷ (-28) = _____

TRUE/FALSE: Question 22.
Sum of two negative integers always gives a number smaller than both the integers.

TRUE/FALSE: Question 23.
Integers are closed under subtraction.

TRUE/FALSE: Question 24.
When we change the order of integers, their difference remains the same.

TRUE/FALSE: Question 25.
(-19) × (-11) = 19 × 11

TRUE/FALSE: Question 26.
(-1) × (-2) × (-3) = 1 × 2 × 3

TRUE/FALSE: Question 27.
Product of three negative integers is a negative integer.

TRUE/FALSE: Question 28.
Integers are closed under multiplication

TRUE/FALSE: Question 29.
(-1) is not a multiplicative identity of integers.

TRUE/FALSE: Question 30.
(a + b) × c = a × c + a × b

TRUE/FALSE: Question 31.
a – b = b – a

TRUE/FALSE: Question 32.
Multiplication fact (-8) × (-10) = 80 is same as division fact 80 ÷ (-8) = (-10).

TRUE/FALSE: Question 33.
The sum of an integer and its additive inverse is zero (0).

Question 34.
Science Application An atom consists of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a charge of -1. Remember number of electrons is equal to number of protons, while answering these questions:
(a) What is the charge on an atom?
(b) What will be the charge on an atom, if it loses an electron?
(c) What will be the charge on an atom, if it gains an electron?

Question 35.
Write a pair of integers, whose product is -36 and whose difference is 15.

Question 36.
(a) Write a positive integer and a negative integer whose sum is a negative integer.
(b) Write a positive integer and a negative integer whose sum is a positive integer.
(c) Write a positive integer and a negative integer whose difference is a negative integer.
(d) Write a positive integer and a negative integer whose difference is a positive integer.
(e) Write two integers which are smaller than – 5 but their difference is – 5.
(f) Write two integers which are greater than -10 but their sum is smaller than -10.
(g) Write two integers which are greater than – 4 but their difference is smaller than – 4.
(h) Write two integers which are smaller than – 6 but their difference is greater than – 6.
(i) Write two negative integers whose difference is 7.
(j) Write two integers such that one is smaller than -11, and other is greater than -11 but their difference is -11.
(k) Write two integers whose product is smaller than both the integers.
(l) Write two integers whose product is greater than both the integers.

Question 37.
If ‘*’ is an operation have, such that for integers a and b. We have a * b = a × b+(a × a + b × b), then find
(i) (-3)*(-5)
(ii) (-6)*2

Question 38.
Height of a place A is 1800 m above sea level. Another place B is 700 m below sea level. What is the difference between the levels of these two places?

Question 39.
A green grocer had a profit of ₹ 47 on Monday, a loss of ₹ 12 on Tuesday and loss of ₹ 8 on Wednesday. Find his net profit or loss in 3 days.

Question 40.
A multistory building has 25 floors above the ground level each of height 5 m. It also has 3 floors in the basement each of height 5m. A lift in building moves at a rate of lm/s. If a man starts from 50m above the ground, how long will it take him to reach at 2nd floor of basement?​

Answer 1

Answer:

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