HESI A2 Math Practice Test

Front

What is the formula to calculate the required dosage of medication based on the concentration and desired amount?

Back

Required dosage (mL) = (Desired amount (mg) / Concentration (mg/mL))

Front

How do you subtract fractions with different denominators?

Back

To subtract fractions with different denominators, find a common denominator, convert the fractions, and then subtract the numerators.

Front

In decimal numbers, what does the tenths place represent?

Back

The tenths place is the first digit to the right of the decimal point, representing one-tenth of a whole.

Front

How do you calculate the average increase in temperature over time?

Back

Average increase = (Final temperature - Initial temperature) / Time (hours)

Front

What is 25% of a number?

Back

To find 25% of a number, multiply the number by 0.25.

Front

What is the conversion factor between milligrams and milliliters for a medication?

Back

The conversion factor depends on the concentration of the medication, typically expressed as mg/mL.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the process for solving a word problem involving medication dosage?

Back

Identify the desired dosage, the concentration of the medication, and use the formula to calculate the required volume.

Front

What is the significance of the tenths place in a number?

Back

The tenths place indicates the first decimal fraction, which is crucial for precision in measurements.

Front

How do you find the percentage of a number?

Back

To find the percentage of a number, multiply the number by the percentage (in decimal form) and divide by 100.