Multiplying and Dividing Rational Numbers

The grocery store sells cheddar cheese at the deli counter. The weight of the cheddar cheese changes by -8 lb. in 5 days. What rational number represents the average change in pounds of the cheddar cheese each day?

• -1.6

• -0.625

• 0.625

• 1.6

A small apple weighs 5/16 lb. A digital scale shows the weight in decimal form. What weight, in pounds, does the scale show?

• .516

• 3.125

• 3.2

• 0.3125

A negative divided by a positive is a ________

• positive
• negative

What is the sign of:

the product of two positive numbers?

• Positive

• Negative

• Zero

• 4/27

• -4/27

• -4/12

• 4/6

• 9

• 1

• 8

• -8/9

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?

• $15.50
• $155
• $15.65
• $1.55

Hema is making cupcakes for her classmates. She has a 14-ounce bag of sprinkles.

If she puts 1/3 ounce of sprinkles on each cupcake, how many cupcakes can she make using the sprinkles she has?

• 18

• 32

• 24

• 42

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

• 82 cm
• 25 cm
• 17 1/4 cm
• 5 1/4 cm

What is the decimal equivalent of 7/8

• 1.14
• .65
• .875
• .78