Rational Numbers and Basic Operations

Mr. Hul presents a math lesson on multiplication and division of rational numbers. The lesson includes exercises on integer multiplication, replacing integers with non-integer rational numbers, and solving word problems related to a fundraiser. The video also covers rules for multiplying and dividing rational numbers, emphasizing the importance of understanding signs and absolute values.

What is the result of multiplying -3 by 2 in the context of borrowing money?

• -6

• 6

• -3

• 3

How does changing the integer -3 to a decimal -3.50 affect the total amount owed?

• It does not change the process

• It doubles the amount

• It increases the amount by 0.50

• It halves the amount

What is the first step in multiplying two rational numbers?

• Multiply the absolute values

• Add the numbers

• Divide the numbers

• Subtract the numbers

If two rational numbers have opposite signs, what is the sign of their product?

• Positive

• Negative

• Zero

• Undefined

How do you determine the monthly charge if a total of $2,649 is spent over a year?

• Add 12

• Divide by 12

• Subtract 12

• Multiply by 12

What is the rule for dividing two rational numbers with the same sign?

• The quotient is positive

• The quotient is undefined

• The quotient is zero

• The quotient is negative

How much does Mara Jones pay for two tulip plants priced at $4.25 each?

• $8.00

• $9.00

• $4.25

• $8.50

If Mr. Clark pays with a $20 bill for an order costing $11.25, how much change should he receive?

• $10.75

• $8.75

• $7.75

• $9.75

How much does Susie need to deduct from her allowance each week if she borrowed $2.50 to pay for a plant?

• $0.25

• $1.00

• $0.50

• $0.75

What is the average donation per person if three people donate a total of $14.40?

• $4.50

• $5.00

• $4.80

• $4.00