Std 7 Mathematics Chapter : 2: Multiplication and Division of Integers

Title : Std 7 Mathematics Chapter : 2: Multiplication and Division of Integers

Maharashtra state board solutions for class 7 SSC board maths  STD 7-  2: Multiplication and Division of Integers

 Know everything about Multiplication and Division of Integers Maharashtra state board class 7 SSC .Get detailed Questions and answers for chapter2 maths.

1. Multiplication of Integers

 The product of two positive (+ve) integers is a positive (+ve) integer.

 The product of one positive (+ve) and one negative (-ve) integer is a negative integer.

 The product of two negative (-ve) integers is a positive (+ve) integer

 (+ve number) × (+ve number) = (+ve number) (+ve number) × (-ve number) = (-ve number) (-ve number) × (+ve number) = (-ve number) (-ve number) × (-ve number) = (+ve number)

 Q.1 7 x 4

Solution : 28. The product of two positive (+ve) integers is a positive (+ve) integer.

Q.2 12 x 10

 Solution: 120 The product of two positive (+ve) integers is a positive (+ve) integer.

**Q.3 . 10 x (-6)

 Solution : -60 The product of one positive (+ve) and one negative (-ve) integer is a negative integer.

**Q.4 (-2) x 4

Solution : - The product of one positive (+ve) and one negative (-ve) integer is a negative integer.

 **Q.5 (-10) x (-2)

 Solution : 20 The product of two negative (-ve) integers is a positive (+ve) integer. **Q.6 (-3) x (-9) Solution : -3 x -9=27. The product of two negative (-ve) integers is a positive (+ve) integer.

3 2. Division of Integers.

 On the number line, we can show negative integers on the left of the zero. We can show parts of integers also in the same way. When one integer is divided by another non-zero integer, it is customary to write the denominator of the quotient as a positive integer.

The rules of division of integers are like the rules of multiplication of integers. We cannot divide any number by zero.

· The quotient of two positive integers is a positive number.

 · The quotient of two negative integers is a positive number. ·

 The quotient of a positive integer and a negative integer is always a negative number.

To divide any negative integer by a negative integer

**Q.1 (-90)÷(-15)

 Solution : −90 −15 = 90 15 5 = 6 1

 Q.2 (-10) ÷ 15.

 Solution : − 10 15 = − 2 5 . . (dividing by 5)