Class 7 > Olympiad Test: Integers

Test Description

Olympiad Test: Integers for Class 7 2023 is part of Class 7 preparation. The Olympiad Test: Integers questions and answers have been prepared
according to the Class 7 exam syllabus.The Olympiad Test: Integers MCQs are made for Class 7 2023 Exam.
Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Integers below.

Solutions of Olympiad Test: Integers questions in English are available as part of our course for Class 7 & Olympiad Test: Integers solutions in
Hindi for Class 7 course.
Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Olympiad Test: Integers | 20 questions in 20 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study for Class 7 Exam | Download free PDF with solutions

1 Crore+ students have signed up on EduRev. Have you? Download the App |

Detailed Solution for Olympiad Test: Integers - Question 1

Two 'pluses' make a plus, two 'minuses' make a plus. **A plus and a minus make a minus**.

−4 × (7) = -28 [∵ (-) x (+) = (-)]

Detailed Solution for Olympiad Test: Integers - Question 2

−45 ÷ 9 = −5

Detailed Solution for Olympiad Test: Integers - Question 3

In this question, we have to multiply the integers with the same negative sign.

-5 x -6 = 30 [∵ (-) x (-) = +]

In multiplication, we have to multiply the sign of the integers also and then assign the obtained sign to the answer.

Negative sign multiplied by negative sign gives an overall positive sign.

Detailed Solution for Olympiad Test: Integers - Question 4

**LHS:** (-8) + (-4) = -12

**RHS:** (-8) – (-4) = -4

⇒ -12 < -4 **i.e. **LHS<RHS

⇒ (- 8) + (- 4) < (- 8) – (- 4)

**Thus, option C is correct.**

Olympiad Test: Integers - Question 5

The sum of two integers is -112. If one of them is -109 the other is:

Detailed Solution for Olympiad Test: Integers - Question 5

Let other number be x.

⇒ x + (-109) = -112

⇒ x = -112 + 109 = -3

Detailed Solution for Olympiad Test: Integers - Question 6

10 × (−3) = -30 [∵ (+) x (-) = -]

Detailed Solution for Olympiad Test: Integers - Question 7

43 - (-17) = 60

Detailed Solution for Olympiad Test: Integers - Question 8

-67 x (-1) = 67 [∵ (-) x (-) = +]

Olympiad Test: Integers - Question 9

A place is 45 metre above sea level and another place is 25 meter below sea level. What is the difference of level in metres between the two places?

Detailed Solution for Olympiad Test: Integers - Question 9

45 m above sea level = +45

25 m below sea level = -25

**Therefore,** 45 - (-25) = 70

Detailed Solution for Olympiad Test: Integers - Question 10

-2 x (-1) = 2 [∵ (-) x (-) = +]

Detailed Solution for Olympiad Test: Integers - Question 11

25 ÷ -5 = - 5 [∵ (+/-) = -]

Olympiad Test: Integers - Question 12

At Shimla, temperature was -5°C on Monday and then it dropped by 2^{°}C on Tuesday. What was the temperature of Shimla on Tuesday?

Detailed Solution for Olympiad Test: Integers - Question 12

Temperature on Monday = -5°C

Temperature on Tuesday = Temperature on Monday - 2°C = -5°C - 2°C = -7°C

Detailed Solution for Olympiad Test: Integers - Question 13

According to BODMAS,

6 × (−15 + 10) = 6 × (-5) = -30

[∵ -15 + 10 = -5]

Olympiad Test: Integers - Question 14

(-1) × (-1) × (-1) × ......... (2m + 1) times, where m is a natural number, is equal to:

Detailed Solution for Olympiad Test: Integers - Question 14

If negative terms are multiplied odd times, then the result will always be negative.

**Thus option B is correct.**

Olympiad Test: Integers - Question 15

Manish deposits Rs 2000 in his bank account and withdraws Rs 1000 from it, the next day. Find the balance in Manish’s account after the withdrawal.

Detailed Solution for Olympiad Test: Integers - Question 15

Manish deposits amount = 2000

Manish withdraws amount = -1000

Balance of Manish's account = 2000 + (-1000) = Rs 1000

**Thus option C is correct.**

Detailed Solution for Olympiad Test: Integers - Question 16

According to BODMAS,

- (-2) × (3 + 5) = 2 x 8 = 16

Detailed Solution for Olympiad Test: Integers - Question 17

When a positive integer and a negative integer are added, we may either get a **negative integer or positive integer.
Example: **

5 + (-2) = 3

2 + (-5) = -3

Detailed Solution for Olympiad Test: Integers - Question 18

(−12 - 3) = -15

(− 6 + 3) = -3

⇒ (−12 - 3) ÷ (− 6 + 3) = (-15) ÷ (-3) = 5

Olympiad Test: Integers - Question 19

If a = 20, b = 40 and c = 80 then a x b + a x c must be equal to

Detailed Solution for Olympiad Test: Integers - Question 19

a = 20, b = 40, c = 80

According to BODMAS,

a x b + a x c = 20 x 40 + 20 x 80 = 800 + 1600 = 2400

Detailed Solution for Olympiad Test: Integers - Question 20

-140 x 8 = -1120

Information about Olympiad Test: Integers Page

In this test you can find the Exam questions for Olympiad Test: Integers solved & explained in the simplest way possible.
Besides giving Questions and answers for Olympiad Test: Integers, EduRev gives you an ample number of Online tests for practice

Download as PDF