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Brain Dump
| Question | Answer |
|---|---|
| 1.234 The one is in the: | ones place or whole number place |
| 1.234 The two is in the: | tenths place |
| 1.234 The three is in the: | hundredths place |
| 1.234 The four is in the: | thousandths place |
| Even numbers end in: | 0 , 2, 4, 6, 8 |
| Odd numbers end in: | 1, 3, 5, 7, 9 |
| Even numbers are: | divisible by 2 |
| Odd numbers are: | not divisible by 2 |
| Prime numbers: on a calculator, divide them by 2, 3, 5, and 7 | get all decimal answers |
| Composite numbers: on a calculator, divide them by 2, 3, 5, and 7 | get at lease one whole number |
| The angles of a triangle always add up to | 180 |
| 1/2 | 0.5 |
| 1/4 | 0.25 |
| 3/4 | 0.75 |
| 1/5 | 0.2 |
| 2/5 | 0.4 |
| 3/5 | 0.6 |
| 4/5 | 0.8 |
| If you don't know what a fraction is as a decimal | divide the numerator by the demoninator |
| 1/8 | 0.125 |
| 3/8 | 0.375 |
| 5/8 | 0.625 |
| 7/8 | 0.875 |
| 1/9 | 0.111 |
| 2/9 | 0.222 |
| 3/9 | 0.333 |
| 1/10 | 0.1 |
| 2/10 | 0.2 |
| 3/10 | 0.3 |
| 1/11 | 0.0909 |
| 2/11 | 0.1818 |
| 3/11 | 0.2727 |
| 4/11 | 0.3636 |
| Area of a rectangle | L x W |
| Area of a square | L x L |
| Area of a triangle | B x H ÷ 2 |
| Perimeter of a rectangle | (2 x L) + (2 x W) |
| Volume | L x W x H |
| Angles < 90 | acute |
| Angle > 90 | obtuse |
| Angles = 90 | right |
| Angle = 180 | straight |
| Mean, median, mode | Measures of CENTER |
| Range | Measure of SPREAD |
| Mean | Average & Fair Share |
| Mean | add all numbers and divide |
| Mode | most often |
| Median | middle number |
| Milli- | 1/100 Will always be the FLY |
| Kilo | 1,000 Will always be the HORSE |
| Centi- | 1/100 Will always be the FLY |
| 2 x R = 4 R is the | variable |
| 5 - ? = 3 ? is the | variable |
| Triangle: all side same length | equilateral |
| Triangle: 2 sides the same length | isosceles |
| Triangle: no sides the same length | scalene |
| fly to horse | divide of course |
| horse to fly | multiply |
| translation | slide |
| rotation | turn |
| reflection | flip |