मराठी

Find the Product, Using Suitable Properties: (− 41) × 102 - Mathematics

Advertisements
Advertisements

प्रश्न

Find the product, using suitable properties:

(− 41) × 102

उत्तर

(−41) × 102

= (−41) × (100 + 2)

= (−41) × 100 + (−41) × 2 a × (b + c) = (× b) + (a × c)

= − 4100 − 82 = −4182

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Integers - Exercise 1.3 [पृष्ठ २१]

APPEARS IN

एनसीईआरटी Mathematics [English] Class 7
पाठ 1 Integers
Exercise 1.3 | Q 5.4 | पृष्ठ २१

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Find the product, using suitable properties:

26 × (− 48) + (− 48) × (− 36)


Find the product, using suitable properties:

15 × (− 25) × (− 4) × (− 10)


Find the product, using suitable properties:

7 × (50 − 2)


In a class test containing 10 questions, 5 marks are awarded for every correct answer and (− 2) marks are awarded for every incorrect answer and 0 for questions not attempted.

Mohan gets four correct and six incorrect answers. What is his score?


Find the following products: (– 20) × (– 2) × (– 5) × 7


Find the following products: (– 1) × (– 5) × (– 4) × (– 6)


If * is an operation have, such that for integers a and b. We have a * b = a × b + (a × a + b × b), then find (–6) * 2


In a test, +3 marks are given for every correct answer and –1 mark are given for every incorrect answer. Sona attempted all the questions and scored +20 marks though she got 10 correct answers.

  1. How many incorrect answers has she attempted?
  2. How many questions were given in the test?

In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and –2 for every incorrect answer and 0 for not supplying any answer. If Yash secured 94 marks in a test, what are the possibilities of his marking correct or wrong answer?


A multistorey building has 25 floors above the ground level each of height 5 m. It also has 3 floors in the basement each of height 5 m. A lift in building moves at a rate of 1 m/s. If a man starts from 5 0m above the ground, how long will it take him to reach at 2nd floor of basement?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×