Multiplying Rational Numbers Independent Practice

If the temperature drops 5 degrees every hour for 9 hours, what is the change in temperature?

(ONLY the sign & the number)

Answer explanation

-5 x 9 = -45

(-1.2) x (-3.4)

Sarah bought 2.5 meters of fabric to make a patchwork quilt. If the fabric was on sale for $6.20 per meter, how much did Sarah spend?

What is the product of −2 and 8.77?

If a plant grows 1/4 cm every day for 21 days, what is the total amount of growth?

Hint: 1/4 x 21 =?

• 20.4 cm

• 88 cm

• $\frac{22}{4}$ cm

• $\frac{21}{4}$ cm

•  $\frac{28}{30}$  
  

•  $\frac{14}{15}$  
  

•  $\frac{28}{15}$  
  

•  $\frac{14}{16}$  
  

The product of two positive numbers will always be _________ .

• Positive

• Negative

• Zero

The product of two numbers with opposite signs will always be ________ .

• Positive

• Negative

• Zero

(-2.1) x 5.8 =

(-3.9) x (-2.8) =