Solve the following problem:
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Solve the following problem:
Apply the distributive property of multiplication in order to break down the fraction into a subtraction exercise between a whole number and a fraction. This allows us to work with smaller numbers and simplify the operation
Reminder - The distributive property of multiplication allows us to break down the larger term in a multiplication problem into a sum or difference of smaller numbers, which makes multiplication easier and gives us the ability to solve the problem without using a calculator
Apply the distributive property formula
Proceed to solve what's inside of the left parentheses:
Note that in the right parentheses we can reduce 9 by 9 as follows:
We obtain the following exercise:
Shown below are the various steps of the solution:
\( 100-(30-21)= \)
The distributive property method makes calculations much easier! Instead of multiplying , you get simple operations: and .
Use it when the fractional part is close to 1, like . Since , you can rewrite the mixed number as one less whole number plus the complement fraction.
Remember: . Think of it as borrowing 1 from the next whole number!
This works best when the fraction is close to 1 (like , , ). For other fractions, converting to improper fractions might be easier.
Convert your mixed number to an improper fraction and multiply: , so . Both methods should give the same answer!
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