| A | B |
|---|
| = | equals |
| < | less than |
| > | greater than |
| % | percent |
| r2 | r squared or r x r |
| ' | foot |
| " | inch |
| perimeter | any figure - add the lengths of all the sides |
| area of rectangle | A = bh (base times height) |
| area of square | A = bh (base times height) |
| area of parallelogram | A = bh (base times height) |
| area of triangle | A = bh divided by 2 |
| area of trapezoid | A = the average of two bases times height |
| 1, 452 | 1, 000 + 100 + 50 + 2 |
| 3 teaspoons | 1 tablespoon |
| 2 pints | 1 quart |
| 8 pints | 1 gallon |
| 4 quarts | 1 gallon |
| 12 inches | 1 foot |
| 3 feet | 1 yard |
| 5, 280 feet | 1 mile |
| 16 ounces | 1 pound |
| 2,000 pounds | 1 ton |
| 60 seconds | 1 minute |
| 60 minutes | 1 hour |
| 7 days | 1 week |
| 365 days | 1 year |
| 52 weeks | 1 year |
| 12 months | 1 year |
| 100 years | 1 century |
| 1 dozen | 12 |
| A number is divisible by 2 | if it ends in an even number |
| A number is divisible by 3 | if digits add to a multiple of 3 |
| A number is divisible by 5 | if it ends in 5 or 0 |
| A number is divisible by 9 | if digits add to a multiple of 9 |
| A number is divisible by 10 | if it ends in 0 |
| Volume of a rectangular solid | Area of base times height (V=Bh)) |
| Voume of a cube | area of base times height (V = Bh) |
