4.1 & 4.2 quiz

Multiply.

 $4.56\ \times10$  

• 4.56

• 45.6
  

• 456

Multiply.

 $0.21\ \times10^3$  

• 210

• 21

• 2.1

Multiply.

 $23.562\ \times100$  

• 2,356.2

• 23.562

• 2.3562

Multiply.

 $0.9\ \times10^2$  

• 0.09

• .9

• 90

Multiply.

 $2.316\ \times10^4$  

• 231,600

• 2,316

• 23,160

Estimate the product. Round each number to the greatest place value, then multiply.

 $4.2\ \times23$  

• 150

• 80

• 100

Estimate the product. Round each number to the greatest place value, then multiply.

 $46\ \times5.23$  

• 250

• 200

• 300

Estimate the product. Round each number to the greatest place value, then multiply.

 $32.6\ \times21$  

• 600

• 900

• 700

Estimate the product. Round each number to the greatest place value, then multiply.

 $2.4\times162$  

• 300

• 100

• 200

Estimate the product. Round each number to the greatest place value, then multiply.

 $6.9\times321$  

• 321

• 3,100

• 2,100