Division and Percentages Practice

This video tutorial covers dividing decimals by decimals, providing multiple examples and methods. It includes step-by-step calculations for dividing numbers like 109.2 by 6 and 31.59 by 13, finding equivalent division expressions, estimating quantities, and comparing values. The tutorial also explores practical applications such as estimating the number of pennies in a bag and calculating student transportation methods using percentages.

What is the result of dividing 109.2 by 6 after scaling both numbers by 10?

• 18.0

• 18.1

• 18.5

• 18.2

Why does Han subtract 52 from 55 in his division method?

• To find the difference in thousandths

• To find the difference in units

• To find the difference in tenths

• To find the difference in hundredths

How can you verify Han's division result of 31.59 by 13?

• By subtracting the quotient from 31.59

• By adding the numbers

• By dividing again

• By multiplying the quotient by 13

What is one equivalent expression for 61.12 divided by 3.2?

• 611.2 divided by 32

• 611.2 divided by 3.2

• 61.12 divided by 32

• 6112 divided by 320

What is the result of dividing 61.12 by 3.2 after scaling both numbers by 100?

• 19.3

• 19.2

• 19.0

• 19.1

Approximately how many pennies are in a bag weighing 5.1 kg if each penny weighs 2.5 grams?

• 2200

• 2100

• 2040

• 2000

What is the difference between 2.5 and 1.6?

• 1.0

• 0.9

• 1.1

• 0.8

How much shorter is Plant C compared to Plant B?

• 2 and 1/5 inches

• 2 and 2/5 inches

• 2 and 3/5 inches

• 2 and 4/5 inches

What percentage of students take public transit if 460 students walk to school?

• 15%

• 20%

• 25%

• 10%

How many students ride the school bus if it is 110% of the number of students who walk?

• 506

• 560

• 460

• 5060