Comparing Decimals and Place Value

Review of Patterns in Place Value and Comparing Decimals

Patterns in Place Value

• Each space you move to the left on a place value chart is 10 times greater than the space to the right.

• Each space you move to the right on the place value chart is ten times less or 1/10 of the value of the space to its left.

• 2 spaces - 100 times difference

• 3 spaces 1000 times difference.

Multiple Choice

When you move three spaces to the right on the place value chart, the value of the digit....

• increases by 100

• increases by 1000

• decreases by 100

• decreases by 1000

Multiple Choice

If you move two spaces to the left on the place value chart. The value of the digit

• decreases by 1000

• increases by 1000

• increases by 100

• decreases by 100

Multiple Choice

In which number is the digit 7 worth 1/00 the value of the digit 7 in 7.258?

• 2578

• 72.48

• 23.47

• 7.235

Multiple Choice

In which number is the 5 worth 1000 times more than the 5 in 2.158?

• 52.81

• 523.80

• 28.54

• 2.485

Multiple Choice

Susan has put stickers into groups of tens in her notebook. She has 78 groups of tens. How many stickers does she have?

• 7,800

• 780

• 7.8

• 7.80

Comparing Decimals

• Line up the decimal point before you compare.

• Add zeros to any empty spaces.

• Start in the place with the greatest place value. (Always the place value to the left)

Multiple Choice

What is the first step when you compare decimals?

• Add zeros to empty spaces.

• Line up your decimal point

• Start at the greatest place value

• Choose the correct symbol.

Multiple Choice

Which equation is correct.

• 9.43 > 9.430

• 9.43 < 9.430

• 9.43 = 9.430

• 9.430 < 9.43

Multiple Choice

Which equation is correct?

• 43.25 < 143.25

• 43.25 > 143.25

• 43.25 = 143.25

• These two numbers cannot be compared.

Multiple Choice

Which equation is correct?

• 2,564. 32 > 2,564

• 2,564. 32 < 2,564

• 2,564. 32 = 2,564

• You can't compare them because 2,564 doesn't have a decimal.

Multiple Choice

Which point represents 44.197 on the number line?

• green point A

• purple point B

• blue point C

• None of them