Ratios (6) Flashcards
1
Q
Ratios can be expressed as a…
A
Equation. Ax + Bx = total
2
Q
Beware…
A
When using fraction ratio, you need to include both fractions as the total. 2/5 children to adults is a ratio of 29%, not 40%
3
Q
Ratios are good…
A
Multiplication/division tools, not as much addition and subtraction
4
Q
Always ____ a DENOMINATOR with a radical sign
A
Rationalize…multiply by 1
5
Q
When solving for actual numbers…
A
Must incorporate the scaling factor. A ratio of 3/5 boys to girls doesnt mean 8 kids. Could mean 6 and 10, etc.
6
Q
Multiplying or dividing ratios…
A
Easy to tell what the new ratio will be.
7
Q
Adding and subtracting ratios…
A
Need more info to determine the impact (remember the scaling factor).
8
Q
Ratios are good candidates for…
A
Backsolving
9
Q
Ratio of 2:1 means…
A
The number must be a multiple of 3
