Maths Integers part 12 (Questions: Multiplication on Integers) CBSE Class 7 Mathematics VII

TL;DR

Learn how to determine the sign of the product when multiplying positive and negative integers.

Transcript

hello friends this video on integers part 12 is brought to you by exam for calm no more fear from exam based on whatever we have learned so far on multiplication of integers let us quickly look at some of the questions question number 1 what will be the sign of the product if we multiply together eight negative integers and three positive integers ... Read More

Key Insights

• ❎ Even numbers of negative integers and positive integers result in a positive product.
• ❎ Odd numbers of negative integers and positive integers result in a negative product.
• 🤘 The sign of the product depends on whether the count of negative integers is even or odd.
• 🥶 Exam For Calm offers free quality education in subjects like physics, chemistry, mathematics, and biology.

Questions & Answers

Q: What is the sign of the product when multiplying eight negative integers and three positive integers?

The sign of the product will be positive because eight negative integers (which are even) and three positive integers will result in a positive product.

Q: What is the sign of the product when multiplying five negative integers and four positive integers?

The sign of the product will be negative because five negative integers (which are odd) and four positive integers will result in a negative product.

Q: Find the product of -9x, -6x, and -3x.

As there are four negative integers, the sign of the product will be positive. Multiplying -9x, -6x, and -3x, we get -810.

Q: Find the product of 12x, -50x, and -6x.

With two negative integers, the product's sign will be positive. Multiplying 12x, -50x, and -6x, we get 3600.

Summary & Key Takeaways

• The video discusses the multiplication of integers and the sign of the product based on the number of negative and positive integers.

• It provides examples of multiplying different numbers of negative and positive integers and explains the resulting sign of the product.

• The video promotes Exam For Calm, a platform offering free quality education with video lessons, notes, and online tests.