NCERT Class 7 Solutions: Integers (Chapter 1) Exercise 1.3–Part 1

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Q-1 Find the each of the following products:

  1. Equation

  2. Equation

  3. Equation

  4. Equation

  5. Equation

  6. Equation

  7. Equation

  8. Equation

  9. Equation

  10. Equation

Solution: When multiplying the numbers some of which are negative, do the multiplication without accounting for sign. Then put the sign on the result according to following rules:

Rules for multiplying signed (positive and negative) integers

Rules for Multiplying Positive and Negative Integers

Rules for multiplying signed (positive and negative) integers

  1. Equation

    Equation Equation

  2. Equation

    Equation Equation

  3. Equation

    Equation Equation

  4. Equation

    Equation Equation

  5. Equation

    Equation

    Zero property of multiplication: Also called the zero product property. There exists a unique number, zero, such that the product of any real number x and 0 is always equal to 0

  6. Equation

    Equation

    Equation

  7. Equation

    Equation Equation

  8. Equation

    Equation

    Equation Equation

  9. Equation

    Equation

    Equation Equation

  10. Equation

    Equation

    Equation Equation

Q-2 Verify the following:

  1. Equation

  2. Equation

Solution:

Given the Descributive propert and apply all examples and verify

Given the Descributive Propert and Apply All Examples

Given the Descributive propert and apply all examples and verify

  1. Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Hence Equation

    Equation

  2. Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Equation

    Hence Equation

    Equation

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