Adding and Subtracting Negative Rational Numbers Explained

The video tutorial covers addition and subtraction of positive and negative numbers, including fractions and mixed numbers. It introduces strategies like 'same sign same' and 'different keep the larger' for determining the sign of the result. The 'keep change change' method is used to convert subtraction problems into addition problems. Several examples are provided to illustrate these concepts, followed by practice problems for viewers to solve.

What is the final sign of the result when adding 1.2 and -3.4?

• Undefined

• Zero

• Negative

• Positive

What is the result of adding -2.5 and -6.2?

• -4.7

• -8.7

• -3.7

• -9.7

When adding 5/6 and -2/6, what is the simplified result?

• 1/3

• 1/2

• 1/6

• 2/3

What is the final sign of the result when adding -2 1/3 and -1 2/3?

• Positive

• Undefined

• Zero

• Negative

What is the result of adding -2 1/3 and -1 2/3?

• -5

• -4

• -2

• -3

What is the first step in converting a subtraction problem to an addition problem?

• Change the first number

• Change the minus sign to a plus sign

• Change the second number to its opposite

• Keep the first number the same

What is the result of converting -4.5 - (-5.5) to an addition problem?

• 4.5 - 5.5

• -4.5 + 5.5

• 4.5 + 5.5

• -4.5 + (-5.5)

What is the result of -4.5 + 5.5?

• 1.0

• -1.0

• 0.0

• 2.0

What is the final sign of the result when adding -3/8 and -4/8?

• Undefined

• Zero

• Positive

• Negative

What is the result of adding -3/8 and -4/8?

• -7/8

• -1/8

• -5/8

• -3/4