Exploring Multiplying and Dividing Rational Numbers

What is the purpose of the triangle tool introduced by Mr. Fleming?

• To solve quadratic equations

• To help with addition and subtraction of rational numbers

• To determine if the answer is positive or negative when multiplying or dividing rational numbers

• To find the greatest common divisor

When multiplying decimals, what should you do first?

• Multiply the digits as usual, ignoring the decimal point

• Subtract the decimal points

• Add the decimal points

• Divide the digits first

How do you determine the number of decimal places in the product when multiplying decimals?

• Count the total number of decimal places in both the multiplicand and multiplier

• Count the decimal places in the multiplier only

• Ignore the decimal places

• Count the decimal places in the multiplicand only

What is the first step when dividing decimals?

• Add the decimal points

• Make the divisor a whole number by multiplying by a power of 10

• Subtract the decimal points

• Multiply the digits as usual

If you have 43.7 divided by 19, what should you do with the decimal point?

• Move it to the left

• Ignore it

• Move it to the right

• Bring it directly above into the quotient

What is the quotient of 43.7 divided by 19?

• 23

• 230

• 0.23

• 2.3

When multiplying 4.5 by 3, what is the correct placement of the decimal point in the final answer?

• Two places to the left

• One place to the left

• Two places to the right

• One place to the right

What is the product of -15.6 and -2?

• 312

• -312

• 31.2

• -31.2

If the signs of the numbers being multiplied or divided are different, what will be the sign of the result?

• Positive

• Zero

• Undefined

• Negative

What is the result of 8.2 divided by -4?

• -0.205

• 0.205

• -2.05

• 2.05