Gaine Classroom Website
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Picture
What is the product of:   111,111,111 x 111,111,111?=  
You may not use a calculator!



Problem of the Day
 
 
On the twelfth day of Christmas, 
my true love sent to me 
Twelve drummers drumming, 
Eleven pipers piping, 
Ten lords a-leaping, 
Nine ladies dancing, 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree!  
1. How many gifts did my true love send to me on the twelfth day of Christmas?
 
2. How many gifts did my true love send to me in total (total sum of gifts over days 1-12)?
 
3. Find a general formula for the total number of gifts given in terms of n for the n days of Christmas.  The pattern is assumed to be 1 gift the first day, 1 + 2 gifts on day 2, etc.
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  • Welcome
    • Del Mar
    • RUSD
  • MATH
    • Policies
    • Math 6 Calendar- Important Dates
    • Math 7/7C Calendar- Important Dates
    • How to navigate ALMA
    • Retake Correction Form
    • Divisibility Rules
    • December 22 Mind Fun
    • Math Challenges
    • Citizen Science
    • Math Games >
      • GCF & LCM
      • Equation Games
      • Fraction Games
      • Fraction Decimal and Percent Games
      • Percents of a Number Games/Activities
    • Coding
    • Favorite Math Videos/Songs
    • Pi Records
    • Distributive Property
    • SOLVE ME PUZZLES
    • Math In Careers
  • LEADERSHIP
    • 21 Qualities of a Leader
  • Classroom Media
  • Parents
    • Vision of the RUSD Graduate
    • Growth Mindset
    • About Mrs. Gaine