Decimal Vocabulary and Basics
What is the special dot that sits between whole numbers and fractional parts?
Decimal point
How many dimes make up one loonie ($1.00)?
10
Which is greater:2.7 or 2.4?
2.7
What is the key halfway benchmark in cents when deciding whether to round up or down to the nearest whole dollar?
50 cents ($0.50)
If 1 full column of a 100-grid is shaded, what fraction and decimal does it represent?
10/100 or 0.10
In our place value system, when you move one place to the right, how many times smaller does the value get?
10 times smaller
How would you write the value of 1 cent as a decimal fraction of a dollar?
$0.01
True or False: $0.8$ is smaller than $0.75$ because $8$ is smaller than $75$?
False (Since $0.8 = 0.80$, $8$ tenths is greater than $7$ tenths).
What is $3.20 rounded to the nearest whole dollar?
$3.00
On a 100-square grid, 6 full columns and 2 small individual squares are shaded. What is the decimal name?
0.62
What do we call one equal part out of ten parts of a whole?
One tenth (1/10 or 0.1)
What coin represents 25 hundredths ($0.25) of a dollar?
A quarter
What helpful trick can you use with zeros when comparing numbers with different decimal lengths, like 0.4 and 0.15?
"Padding with zero" (changing 0.4 to 0.40)?
What is $8.75 rounded to the nearest whole dollar?
$9.00
If you are standing on a class number line between 0$ and 1$, what friendly landmark decimal sits exactly in the middle?
0.5 or 0.50
What do we call one equal part out of one hundred parts of a whole?
One hundredth (1/100 or 0.01)
How many dimes do you have if your money amounts to 4 tenths ($0.40) of a dollar?
4 dimes
Between whole numbers 1 and 2, how many equal divisions are marked to show tenths on a number line?
10
What is $6.82 rounded to the nearest tenth?
6.8$
What two friendly quarter landmarks sit on either side of 0.5$ on a number line?
0.25 and 0.75
If you are reading a 100-grid model, what two things do you count first and second to find the total decimal name?
The tenths column (long sticks) and hundredths column (small squares)
Why does $0.04 only equal 4 cents, while $0.4 means 40 cents?
Because the 4 in $0.04 is in the hundredths place, while the 4 in $0.4 is in the tenths place
Put these decimals in order from least to greatest: 0.6, 0.08, 0.45, 0.5.
0.08, 0.45, 0.5 (or 0.50), 0.6 (or 0.60)
What is $14.55 rounded to the nearest tenth?
14.6
If you buy a drink for $2.85 and a sandwich for $4.10, what is a quick mental estimation of your total cost rounded to the nearest whole dollars?
$7.00