Chapter 5

6.7 x 10³ =

• 670

• 6,700

• 67

• 67,000

1.13 x 2 =

• 2.26

• 22.6

• 0.226

• 2.206

0.4 x 0.1 =

• 4

• 0.4

• 0.004

• 0.04

3.83 x 7.8 =

• 21.366

• 27.756

• 29.874

• 29.705

There are 1.5 grams of protein in a banana. You eat 3 bananas. How many grams of protein do you consume?

• 5.4

• 5.5

• 4.4

• 4.5

A newborn lion cub weighs 1.4 kilograms. A lioness weighs 90.7 times as much as the lion cub. How much does the lioness weigh?

• 127.58

• 126.98

• 134.08

• 125.88

A blue penguin weighs 0.6 times the weight of a Galapagos penguin. The Galapagos penguin weighs 5.5 pounds How much does the blue penguin weigh?

• 3.3

• 3.0

• 3.2

• 3.7

A fruit fly is 2.9 mm long. A magnified image of the fruit fly is 100 times as long as its actual length. How much longer is the fruit fly in the image than its actual length?

• 287.02

• 207.1

• 287.1

• 288.2

Oranges cost $1.18 per pound. You buy 3.5 pounds of oranges and give the cashier $5. How much change do you receive?

• 0.88

• 0.87

• 0.86

• 0.85

You use 20 x 9 to estimate 23 x 9.15

Is your estimate an overestimate or an underestimate?

• overestimate

• underestimate