Operations with Positive and Negative Numbers

The video tutorial covers the addition and subtraction of negative and positive decimals. It explains the rules for adding decimals with the same and opposite signs, emphasizing the importance of aligning decimal points. The tutorial provides examples of both addition and subtraction, including borrowing techniques. The 'keep, change, change' method is introduced for subtraction, followed by practice problems to reinforce learning.

What should you do when adding two numbers with the same sign?

• Subtract and use the opposite sign

• Subtract and use the sign of the larger number

• Add and use the same sign

• Add and use the opposite sign

When adding 4.5 and 6.3, what is the correct sum?

• 8.8

• 11.8

• 9.8

• 10.8

If you have a positive and a negative number, what operation should you perform?

• Multiply them

• Add them

• Divide them

• Subtract them

What is the result of 10.7 minus 2.5?

• 6.2

• 8.2

• 9.2

• 7.2

What is the first step in the 'keep, change, change' method?

• Change the second number

• Keep the first number

• Change the first number

• Add the numbers

What is the solution for card A: 3.778 minus 2.078?

• 1.6

• 1.7

• 1.8

• 1.9

In card B, what is the result of 8.34 minus 7.15?

• 1.39

• 1.09

• 1.29

• 1.19

For card C, what is the solution when subtracting 20.224 and 8.6?

• 11.624

• 12.624

• 10.624

• 13.624

What is the final solution for card D: 0.53 plus 3.87?

• -4.6

• -4.4

• -4.3

• -4.5

What should you do if your solution does not match any of the given solutions?

• Move on to the next problem

• Ask a friend

• Check your work

• Ignore it