Multiplying and dividing decimal numbers

Approximately 51% of $119.99

• $60

• $30

• $12

• $100

Answer explanation

51% is close to 50%.
To take 50% you divide by 2.
$119.99 is close to $120 and
120/2 = 60.

Estimate.
32.79  $\div$  8.1

• 1

• 2

• 3

• 4

Sadie sells pianos for $815, and the sales tax rate is 15% of the sales price.  About how much is the sales tax on the piano?

• $122.25
• $830.00
• $937.25
• $692.75

• 1,100

• 100

• 1,000

• 10,000

Using compatible numbers, find the BEST estimate for 307 x 5.79.

• 1,000

• 1,500

• 1,800

Estimate the quotient of 1,001 and 5

• 200

• 20

• 100

Estimate the Quotient:

 $140\ \div\ 6.54$  

• about 28

• about 20

• about 14

• about 980

A bag of pretzels contains approximately 17½ ounces.  
One serving of pretzels is 1¼ ounces.  How many servings of pretzels are in the bag? 

• 7
• 14
• 16
• 22

The Smith's wagon train was about 98.98 ft long. Each wagon was about 9.8 ft long. If the wagons traveled end to end, how many wagons were in the train?

• 10

• 10.1

• 11

• 100