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5 Cards in this Set
- Front
- Back
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Back-Solving
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- Pick C if C is middle number, if needing larger number move to D then E. If needing smaller number move to B then A.
- Pick Simplest number to use - Write down ABCED & cross off as you try numbers |
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Smart Numbers
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- guess Prime numbers
- create chart making numbers selected for each variable - Fraction word Probs: Pick nums that equal least common denominator of fractions involved. ex: 1/2 apples & 3/5 apples... pick 10 - Percent ?'s start with 100 |
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Estimation
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- smaller denominator the bigger the overall number
- for probability ask if more or less than 1/2 - rate: -two bodies in motion, find faster one. - combined work, make sense that combined rate is faster? If so, by how much? |
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Number Properties
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- example: ask odd? or divisible by 3?
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Brute Force
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Works well with Rate ?'s
- where two cars meet on straight line. Construct picture & map out where cars are after each hour until meet. |
