If a & b are 2 integers, find a × b for a = - 4376 and b = + 50 .

To find a × b for a = - 4376 and b = + 50 . Integers: A collection of natural numbers, their negatives and zero. Zero is neither negative nor positive. While multiplying integers, multiply the digits and then use the rules to multiply the sign. + × + = + - × - = + + × - = - - × + = - Here, a × b = - 4376 × + 50 4376 × 50 = 4000 + 300 + 70 + 6 × 50 4000 + 300 + 70 + 6 × 50 = 4000 × 50 + 300 × 50 + 70 × 50 + 6 × 50 = 200000 + 15000 + 3500 + 300 = 218800 We have 4376 × 50 = 218800 and - × + = - Therefore, - 4376 × + 50 = - 218800

If a & b are 2 integers, find a × b for a = - 5372 and b = + 12 .

To find a × b for a = - 5372 and b = + 12 . Integers: A collection of natural numbers, their negatives and zero. Zero is neither negative nor positive. While multiplying integers, multiply the digits and then use the rules to multiply the sign. + × + = + - × - = + + × - = - - × + = - Here, a × b = - 5372 × + 12 5372 × 12 = 5000 + 300 + 70 + 2 × 12 5000 + 300 + 70 + 2 × 12 = 5000 × 12 + 300 × 12 + 70 × 12 + 2 × 12 = 60000 + 3600 + 840 + 24 = 64464 We have 5372 × 12 = 64464 and - × + = - Therefore, - 5372 × + 12 = - 64464

If a & b are 2 integers, find a × b for a = 1110 and b = 23 .

To find a × b for a = 1110 and b = 1110 × 23 . Integers: A collection of natural numbers, their negatives and zero. Zero is neither negative nor positive. While multiplying integers, multiply the digits and then use the rules to multiply the sign. + × + = + - × - = + + × - = - - × + = - Here, a × b = 1110 × 23 = + 1110 × + 23 1110 × 23 = 1000 + 100 + 10 × 23 1000 + 100 + 10 × 23 = 23 × 1000 + 23 × 100 + 23 × 10 = 23000 + 2300 + 230 = 25530 We have 1110 × 23 = 25530 and + × + = + Therefore, 1110 × 23 = + 25530

Use distributive property and find the product: 81 × 1001

To find 81 × 1001 using distributive property. Distributive property of multiplication over addition for integers: For integers a , b , c , we have a × b + c = a × b + a × c 81 × 1001 = 81 × 1000 + 1 81 × 1000 + 1 = 81 × 1000 + 81 × 1 = 81000 + 81 = 81081 Therefore, 81 × 1001 = 81081

E M B I B E

Jessi Gateway to Mathematics Class 7 Term I>Chapter 1 - Number System>Exercise

Revathi Sivasankar and Manikandan Jayaprabha Solutions for Chapter: Number System, Exercise 1: Exercise

Author:Revathi Sivasankar & Manikandan Jayaprabha

Revathi Sivasankar Mathematics Solutions for Exercise - Revathi Sivasankar and Manikandan Jayaprabha Solutions for Chapter: Number System, Exercise 1: Exercise

Attempt the free practice questions on Chapter 1: Number System, Exercise 1: Exercise with hints and solutions to strengthen your understanding. Jessi Gateway to Mathematics Class 7 Term I solutions are prepared by Experienced Embibe Experts.