Decimal Models
1 plus 1/10
1.1
convert a fraction to a decimal
Divide numerator by denominator using long division
convert a decimal written to the hundreths place to a fraction
remove the decimal point and put the # over 100
0.43
Write the decimal number that names this.
0.82
Write the decimal number that names this.
0.22
Write the decimal that names this.
0.31
Write the number that names this.
0.37
Write the number that names this.
Decimal Models Show
a fraction of 100 usually
eight tenths (convert to fraction form)
8/10
eighty-nine hundredths (convert to fraction form)
89/100
4/10 (convert to word form)
four tenths
0.55 in fraction form
55/100
1/100
0.01
1/10
0.1
10 plus 1/10
10.1
ten plus one plus 1/10
11.1
ten plus one plus 1/10 plus 1/100
11.11
five tenths (convert to fraction form)
5/10
fifty-two hundredths (convert to fraction form)
52/100
fifty-six hundredths (convert to fraction form)
56/100
sixty-five hundredths (convert to fraction form)
65/100
How to describe decimal models with fractions
Count how many tiny squares are colored. Divide that number by 100. Thus if 23 are colored, and 77 are not, then 23/100 is the fraction that describes this model.
How to describe decimal models with decimals to the hundredths place
Think about how we write dollars. If we have $1.23, then we have one dollar, which is equal to 100 pennies, plus two dimes, which are equal to twenty pennies, plus three more pennies. The dollars represent the ones place, the dimes represent tenths of a dollar, and the pennies represent hundreths of a dollar. Thus, 1.23 means we have a one, plus two tenths, plus 3 one-hundreths.
0.60
This large square represents a whole, or one. It is divided into one hundred little tiny squares, each of which is called a "hundredth" . We can pretend that it is one dollar, and that the tiny little squares are pennies. There are 60 colored hundreth squares, and a total of 100 altogether. So this is written as 0.60, which means no ones, plus 6 tenths of a one. Each vertical bar of ten hundredths is a tenth of a one. If this were money, it would be $0.60, and you would see six dimes or 60 pennies. If you were writing a fraction, it would be 60/100.
0.38
Write the number that names this.
0.45
Write the number that names this.
0.7
Write the number that names this.
eighty-nine hundredths (convert to decimal form)
Write this number in word form 0.89
sixty-five hundredths (convert to decimal form)
Write this number in word form. 0.65
eight tenths (convert to decimal form)
Write this number in word form. 0.8
fifty-six hundredths
Write this number in word form: .56
0.55 in word form
fifty-five hundredths
4/10 (convert to decimal form)
0.4
five tenths
0.5
0.55 in expanded form
0.5 + 0.05
fifty-two hundredths (convert to decimal form)
0.52
60/100
0.60
93/100 (convert to decimal form)
0.93
one plus 1/100
1.01
ten plus 1/100
10.01
0.5
Write the number that names this.
93/100 (convert to word form)
ninety-three hundreths
