All ISEE Middle Level Math Resources
Example Questions
Example Question #31 : How To Subtract Fractions
What is the solution to the expression below?
In order to subtract fractions, the least common denominator must be found for the denominator. The least common denominator of 4 and 9 is 36. Therefore, the fractions should be converted accordingly:
Example Question #32 : How To Subtract Fractions
Subtract the numerators and keep the denominator as is:
Answer:
Example Question #33 : How To Subtract Fractions
Evaluate:
By the order of operations, carry out the operations in parentheses first; since there is a multiplication and a subtraction present, carry them out in that order. Finally, carry out the remaining subtraction:
Example Question #33 : How To Subtract Fractions
Subtract:
To solve, subtract the numerators and leave the denominators the same:
Answer:
Example Question #34 : How To Subtract Fractions
Subtract:
To solve, subtract the numerators and leave the denominators the same:
Answer:
Example Question #35 : How To Subtract Fractions
Which of the following is the difference of nine tenths and nineteen thousandths?
Nine tenths is equal to 0.9; nineteen thousandths is equal to 0.019. Subtract them, rewriting 0.9 as 0.900:
Example Question #36 : How To Subtract Fractions
Which of the following is the difference of two-thirds and one-fifth?
Since , express each fraction as its equivalent in fifteenths, and subtract the numerators, as follows:
Example Question #37 : How To Subtract Fractions
Subtract:
Subtract the numerators and leave the denominators the same:
Answer:
Example Question #38 : How To Subtract Fractions
Subtract:
Subtract the numerators and leave the denominators the same:
Answer:
Example Question #1325 : Isee Middle Level (Grades 7 8) Mathematics Achievement
The time is now 2:17 AM. What time was it four hours and thirty-six minutes ago?
Two hours and seventeen minutes have elapsed since midnight. Since four hours and thirty-six minutes make a greater quantity, we need to look at this as fourteen hours and seventeen minutes having elapsed since noon.
Change both to minutes as follows:
14 hours 17 minutes:
minutes
4 hours 36 minutes:
minutes
Subtract these quantities:
minutes have elapsed since noon. 581 minutes is equal to
hours, or 9 hours 41 minutes after noon, so the time was 9:41 PM.
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