Practice Flashcards: PSAT Data — rates, ratios and the units they hide in | Zestly

Question 1

Setting up a proportion

Accepted Answer

Ensure units are consistent on both sides of the equation, such as $\frac{	ext{units}_1}{	ext{units}_2} = \frac{	ext{units}_1}{	ext{units}_2}$.

Question 2

Unit cancellation

Accepted Answer

When multiplying rates, arrange them so that the denominator of one rate cancels the numerator of the other, leaving only the desired final unit.

Question 3

Conversion: multiply or divide?

Accepted Answer

If converting from a larger unit to a smaller unit, you multiply. If converting from a smaller unit to a larger unit, you divide.

Question 4

Converting a rate

Question 5

Dividing a total in a ratio

Question 6

Comparing two rates

Question 7

Why write units beside numbers?

Question 8

Proportional relationship

Question 9

Density formula

Question 10

Concentration formula

Question 11

Time conversion factor

Question 12

Metric conversion factor