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3. Remembering Roman numeral values.
. Most people know what I, V and X mean in Roman numerals, but you get much beyond that, and the letters look like just that — letters. An old-school mnemonic device to help people remember the values goes like this, “My Dear Cat Loves Xtra Vitamins Intensely.” The first letter of each word is a Roman numeral, and they appear in descending order starting with 1,000 and ending with 1 like so:
M (1,000)
D (500)
C (100)
L (50)
X (10)
V (5)
I (1)
4. Multiplying by 11.
. Multiplication tables can throw students for fits. An old-school trick for 11s is that multiplying 11 with any number from 1 to 9, gives you an answer that doubles the number that was multiplied.
5. Waxing and waning moon.
. Are you trying to keep the waxing and waning moon straight? The waning moon looks like a C and the waxing moon looks like a D.
6. I before e, or e before i?
. For words that have i and e in them together, there is a saying to help you keep straight which comes first, the i or the e. “I before e, except after c; and in words that say a as in neighbor and weigh.”
7. Time till sunset.
If you need a quick estimate of how much time you have before sunset, place your fingers under the sun. However many fingers it takes to fill the space between the sun and horizon, count. Then multiply the number of fingers by 15 (for 15 minutes). This gives you how much time you have.
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