Operations with Directed Numbers

This video tutorial by Mr. Dubey covers the addition and subtraction of directed numbers, focusing on positive and negative numbers. It explains how to simplify expressions by omitting plus signs and how subtraction can be viewed as addition with a sign change. The tutorial also covers adding numbers with the same sign, where the numbers are added and the sign is retained, and adding numbers with different signs, where the smaller number is subtracted from the larger one, and the sign of the larger number is kept. The video concludes with a call to action to like and subscribe.

What is the first step in simplifying the addition of directed numbers?

• Subtract the smaller number from the larger

• Change all numbers to positive

• Remove unnecessary plus signs

• Add the numbers directly

How do you write 'positive 3 added to positive 7' in simplified form?

• +3 - 7

• +3 + +7

• 3 + 7

• 3 - 7

What is the rule for subtracting a directed number?

• Subtract the number as it is

• Add the number as it is

• Add the number with its sign changed

• Ignore the number

How do you handle 'negative 3 subtract negative 7'?

• Add 3 and 7

• Subtract 3 from 7

• Subtract 7 from 3

• Add 3 and change the sign of 7

How do you handle 'positive 3 subtract positive 7'?

• Subtract 7 from 3

• Add 3 and 7

• Subtract 3 from 7

• Add 3 and change the sign of 7

What is the result of 'negative 3 subtract positive 7'?

• Positive 10

• Negative 10

• Negative 4

• Positive 4

What is the result of 'positive 3 subtract negative 7'?

• Negative 10

• Positive 10

• Positive 4

• Negative 4

What is the result of 'negative 3 subtract negative 7'?

• Positive 4

• Negative 10

• Positive 10

• Negative 4

What is the result of adding two positive numbers?

• Add the numbers and change the sign

• Add the numbers and keep the sign

• Subtract the numbers and keep the sign

• Subtract the smaller from the larger

What is the result of adding two negative numbers?

• Subtract the numbers and keep the sign

• Add the numbers and keep the sign

• Subtract the smaller from the larger

• Add the numbers and change the sign