Modeling Addition of Rational Numbers

What is a rational number?

• A number that cannot be a decimal

• A number that is always positive

• A number that can be written as a fraction

• A number that is always negative

Why is modeling important when adding rational numbers?

• It makes the process faster

• It makes the numbers larger

• It helps in understanding the solution better

• It is not important at all

When adding two negative numbers, what can you expect the result to be?

• Positive

• Zero

• Undefined

• Negative

Why is it important to not convert fractions to decimals when adding them?

• Fractions are always larger

• Decimals are harder to work with

• Fractions provide more precision

• Decimals are not allowed in rational numbers

What is the result of adding -3/4 and -1 1/2?

• -2 1/4

• -1 1/4

• -1 3/4

• -2 3/4

How do you add numbers with different signs?

• By subtracting the smaller absolute value from the larger

• By converting them to fractions

• By adding them directly

• By ignoring the signs

What is the result of 4.5 minus 2.5?

• 4.0

• 3.0

• 2.0

• 1.0

What happens when you add a positive and a negative number?

• The result is always positive

• The result is always negative

• The result is always zero

• The result depends on the larger absolute value

What is the benefit of using a number line in solving rational number problems?

• It is only useful for whole numbers

• It is not beneficial at all

• It provides a visual representation

• It makes the problem more complex

How can modeling help in solving math problems?

• It makes the problem more difficult

• It is not helpful at all

• It helps in visualizing and verifying the solution

• It is only useful for addition