| Question | Answer |
| The meaning of a number equal to the distance of that number from zero on the number line | Absolute value |
| A mathematical sentence or term consisting of letters and/or numbers that are multiplied, divided, added, subtracted, or raised to a power. | Algebraic Expression |
| A radiographically derived unit of the SI system, abbreviated as C/kg, formerly known as the Roentgen. | coulomb per kilogram (C/kg) |
| One quantity is a multiple of a second quantity | direct variation |
| A statement that contains an equal sign | equation |
| Equations that have the same solutions | equivalent equation |
| Unit of absorbed energy or dose; 1 joule of enery absorbed in each kilogram of absorbing material. | gray (Gy) |
| An equation in which all numeric values substituted for the unknown will give a true statement | identity |
| When two quantities are multiplied, their product is a constant. | inverse variation |
| The standard unit of mass, abbreviated as kg. | kilogram |
| Terms (numbers) with identical literal factors (usually noted by a letter) | like term |
| The standard unit of length, abbreviated as m. | meter |
| An equation that contains at least one unknown (variable) | open equation |
| The standard unit of time, abbreviated as s. | second |
| The product of the absorbed dose in gray and the radiation weighting factor | sievert (Sv) |
| Units of measurement were officially defined on an international level through the adoption of the? | SI Unit System |
| Coulomb per kilogram (C/kg), formerly the? | roentgen (R) |
| The gray (Gy), formerly the? | rad (radiation absorbed dose) |
| The sievert (Sv), formerly the? | rem (radiation equivalent man) |
| What are the seven base SI units? | 1. mass
2. length
3. time
4. electric current
5. temperature
6. amount of substance
7. luminous intensity |
| What are the fundamental units of measurement? | mass, length and time |
| One kilometer is equal to how many meters? | 1000 meters |
| What are the significant digits of 20.10 | 4 |
| What are the significant digits of 192 | 3 |
| What are the significant digits of 38.04 | 4 |
| What are the significant digits of 2,700 | 2 |
| What are the significant digits of 1,800.004 | 7 |
| Change 0.0081 to scientific notation | 8.1 x 10^-3 |
| Change 7,811.2 to scientific notation | 7.8112 x 10^3 |
| Change 0.00024 to scientific notation | 2.4 x 10^-4 |
| Change 78,432 to scientific notation | 7.8432 x 10^4 |
| Change 3.164 x 10^2 into ordinary notation | 361.4 |
| Change 1.876 x 10^-4 into ordinary notation | .0001876 |
| When converting a fraction into a decimal, which operation should be applied to the numerator and denominator?
A. addition
B. multiplication
c. division
d. subtraction | division |
| When converting a percent to a decimal, the decimal point must be moved how many places?
a. 2 to the left
b. 2 to the right
c. 1 to the left
d. 1 to the right | a. 2 to the left |
| How many significant digits does 1,500 have? | 2 |
| What is the new number when 0.0215 rounded to 2 significant digits?
a. 0.02
b. 0.022
c. 0.0215
d. 00.2 | b. 0.022 |
| What is the prefix for 10^1? | Deka |
| What is the prefix mGy a symbol for? | Milligray |
| Exposure Factors
Chapter 1 - Basic Math | |
