Quick Check 6.1

Use mental math and patterns to complete the problem.

 $1.2\ \div\ 10^{2\ }=\ ?$  

Use mental math and patterns to complete the problem.

 $150\ \div\ 10^{3\ }=\ ?$  

Which numeral should fill in the blank to make the equation true?

720 ÷ ______ = 7.2

• 1

• 10

• 100

• 1,000

Choose the equations where n = 100 will make the equation true.

• 12.4 ÷ n = 0.124

• 3.8 ÷ n = 0.038

• 52,350 ÷ n = 52.35

• 850.4 ÷ n = 85.04

• 0.41 ÷ n = 0.0041

Choose all the equations where d = 10³ will make the equation true.

• 37,162 ÷ d = 3.7162

• 1,041.6 ÷ d = 1,041.6

• 2.7 ÷ d = 0.0027

• 168.2 ÷ d = 1.682

• 80.7 ÷ d = 0.0807