Decimals - TACHS Math
Card 0 of 4
Add.
Add.
In order to solve this problem we need to line up the decimal places and add.
In order to solve this problem we need to line up the decimal places and add.
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Square 0.44.
Square 0.44.
To square a number means to multiply it by itself, so we seek to compute
To multiply two decimal fractions, first multiply, ignoring the decimal points:
Move the (implied) decimal point the number of spaces right equal to the total number of digits right of the decimal points in the factors; this can be seen to be four:
The square of 0.44 is 0.1936.
To square a number means to multiply it by itself, so we seek to compute
To multiply two decimal fractions, first multiply, ignoring the decimal points:
Move the (implied) decimal point the number of spaces right equal to the total number of digits right of the decimal points in the factors; this can be seen to be four:
The square of 0.44 is 0.1936.
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Tiffany earns 
each week. If Mark earns 
less than Tiffany, what is the sum of their salaries each week?
Tiffany earns
Start by finding out how much Mark makes. Since he makes 
less than Tiffany, we can write the following to find Mark's weekly salary:
Mark must make 
each week. Now, add together their salaries to find the sum.
Start by finding out how much Mark makes. Since he makes
Mark must make
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Rachel earns 
an hour as an assistant in a science lab. How many 
hour work weeks will she need to work in order to pay for a car that costs 
?
Rachel earns
Start by figuring out how much Rachel can earn in each week by multiplying her hourly rate by the number of hours worked each week.
Now, divide the amount she needs to earn by the amount earned each week to find how many weeks she will need to work to earn that amount.
Rachel must work for 
weeks in order to earn enough for the car.
Start by figuring out how much Rachel can earn in each week by multiplying her hourly rate by the number of hours worked each week.
Now, divide the amount she needs to earn by the amount earned each week to find how many weeks she will need to work to earn that amount.
Rachel must work for
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