Sums
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[hide]Sum of Natural Numbers
even number of terms = last term is even
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-8 | ספר_הכללים_במספר#zy8k | 77) 1, 2, 3, 4, 5, 6, 7, 8.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-10 | קצת_מענייני_חכמת_המספר#mfsN | To know the numbers that are set in succession.
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sum/sum of natural numbers | 1-10 | ספר_מעשה_חושב#oa4i | Example: if you want to sum one, two, three, four, and so on up to ten, including ten.
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sum/sum of natural numbers | 1-10 | ספר_חשבון#QIjG | If a person says: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 - how much is the total?
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sum/sum of natural numbers | 1-10 | ספר_החשבון_והמדות#4op2 | Example: we wish to add the numbers that are from 1 up to 10 one by the one.
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sum/sum of natural numbers | 1-10 | ספר_החשבון_לאל_חצאר#4THN | When you are told: sum from one to ten in arithmetic succession.
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sum/sum of natural numbers | 1-10 | ספר_החשבון_והמדות#QkuV | Example: we wish to know how much is the sum of the numbers that are from 1 up to 10.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 5-10 | ספר_החשבון_לאל_חצאר#hJtL | If you are told: sum from five to ten.
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sum/sum of natural numbers | 5-10 | קצת_מענייני_חכמת_המספר#6eLr | If the numbers that are given in succession do not start from 1.
ואם המספרים המונחים על סדר המספר לא יתחילו מהא'
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-12 | ספר_חשבון#kTQb | If he continues his question until 12.
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sum/sum of natural numbers | 1-12 | ספר_המספר_/_אברהם_אבן_עזרא#xE2F | Example: we wish to know how much is the sum up to 12?
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sum/sum of natural numbers | 1-12 | מלאכת_המספר#V836 | Example: we wish to know the sum from one to 12.
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sum/sum of natural numbers | 1-12 | לקוטים_מספר_פראלוקא#GKFV | Example: we wish to know the sum of all the numbers from 1 to 12.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-18 | ספר_המספר_/_אברהם_אבן_עזרא#IeC7 | Another example for an even number [of terms]: how much is the sum up to 18?
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-20 | ספר_חשבון#u3dY | If he continues his question until 20.
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sum/sum of natural numbers | 1-20 | עיר_סיחון#2heg | Question: we summed all the successive numbers from one to twenty and it is the sum. How much is the sum?
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-100 | ספר_חשבון#YfUq | If he continues his question until one hundred.
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odd number of terms = last term is odd
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-7 | לקוטים_מספר_פראלוקא#xJHj | If you want to sum from 1 to 7.
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sum/sum of natural numbers | 1-7 | ספר_הכללים_במספר#bsMG | 78) 1, 2, 3, 4, 5, 6, 7.
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sum/sum of natural numbers | 1-7 | ספר_חשבון#Hvdz | As the one who says: I continue my calculation until 7. How much is the total?
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-9 | ספר_חשבון#2b1t | If he continues his question until 9.
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sum/sum of natural numbers | 1-9 | ספר_החשבון_והמדות#vKJf | Another example for an odd [number of terms]: we wish to know how much is the sum of the numbers from 1 up to 9.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-11 | עיר_סיחון#pHD6 | If we want to know how much are the numbers summed up up to eleven.
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sum/sum of natural numbers | 1-11 | ספר_המספר_/_אברהם_אבן_עזרא#OprP | Example: we wish to know how much are the numbers that are summed from 1 to 11?
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-17 | ספר_חשבון#T2rf | If he continues until 17.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | 1-19 | ספר_חשבון#CIoT | If he continues until 19.
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Find the last term
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | aₙ, 1, 55 | ספר_החשבון_לאל_חצאר#Q7I1 | Sum from one up to an unknown number by the succession of the numbers and the result is fifty five, how much is the unknown number?
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sum/sum of natural numbers | aₙ, 1, 55 | ספר_החשבון_והמדות#GzAy | Question: if a person asks you: I summed numbers and they are 55, how much are the numbers?
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sum/sum of natural numbers | aₙ, 1, 55 | קצת_מענייני_חכמת_המספר#2wMi | Numbers that are summed successively and the result is a known number.
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Category | Comment | Link | Annotated text |
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sum/sum of natural numbers | aₙ, 1, 465 | ספר_המספר_/_אברהם_אבן_עזרא#GXqn | Example: one asks: I sum all the numbers until they reach a known number and the sum is 465. How much is the last number?
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Sum of Evens
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | 2-8 | ספר_הכללים_במספר#zzdV | 80) 2, 4, 6, 8 - that are evens.
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | 2-10 | ספר_מעשה_חושב#Cm3W | Example: if you want to sum the evens up to ten.
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sum/sum of even numbers | 2-10 | ספר_החשבון_לאל_חצאר#6jsl | When you are told: sum from two to ten by the sequence of the evens.
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | 2-12 | ספר_חשבון#Gsfn | As 2, 4, 6, 8, 10, 12 - how much is the total?
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sum/sum of even numbers | 2-12 | מלאכת_המספר#voap | Example of this: if the last even number is 12.
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sum/sum of even numbers | 2-12 | ספר_דיני_ממונות#WfgD | 23) Question: if you want to know the sum of all the evens from 2 to 12.
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | 6-12 | ספר_החשבון_לאל_חצאר#tzpR | If he said: sum from six to twelve by the sequence of the evens.
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | 2-20 | ספר_חשבון#qYPE | If he says: I continued until twenty.
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Find the last term
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Category | Comment | Link | Annotated text |
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sum/sum of even numbers | aₙ, 2, 30 | ספר_החשבון_לאל_חצאר#F8bu | If he said: sum from two up to an even number by the succession of the evens and the sum is thirty, how much is the unknown number up to which it is summed?
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Sum of Odds
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | 1-9 | ספר_הכללים_במספר#djRx | 79) 1, 3, 5, 7, 9 - that are odds.
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sum/sum of odd numbers | 1-9 | ספר_חשבון#rGAn | As 1, 3, 5, 7, 9 - how much is the total?
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sum/sum of odd numbers | 1-9 | ספר_מעשה_חושב#Mp2k | Example: If you want to sum the successive odds up to nine including one.
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sum/sum of odd numbers | 1-9 | ספר_דיני_ממונות#2PiX | 22) Question: sum all the odds from 1 to 9.
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | 1-11 | ספר_חשבון#NxSy | If he continues his question until 11.
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | 1-13 | ספר_חשבון#2g6v | If he continues until 13.
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | 7-13 | ספר_החשבון_לאל_חצאר#TVil | If he said: sum from seven to thirteen by the sequence of the odds.
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | 1-19 | ספר_החשבון_לאל_חצאר#RTIO | Sum from one to nineteen by the sequence of the odds.
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Find the last term
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Category | Comment | Link | Annotated text |
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sum/sum of odd numbers | aₙ, 1, 36 | ספר_החשבון_לאל_חצאר#Yciw | If he said: sum from one up to an unknown number by the succession [of the odds] and the sum is 36, how much is the [unknown] number?
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Sum of Powers of Two = Sum of Even-Times-Even Numbers
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Category | Comment | Link | Annotated text |
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sum/sum of powers of two | 1-32 | ספר_חשבון#y2at | As 1, 2, 4, 8, 16, 32.
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sum/sum of powers of two | 1-32 | ספר_חשבון#6kg5 | Example: one says: I summed the doubles from 1 to 32. How much is their sum?
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Category | Comment | Link | Annotated text |
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sum/sum of powers of two | 1-64 | ספר_חשבון#WJGn | If he says: I started from 1 and doubled until 64. How much is [their sum]?
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Category | Comment | Link | Annotated text |
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sum/sum of powers of two | 1-128 | ספר_חשבון#IUR1 | If he says: I started from one and doubled until 128. How much is [their sum]?
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sum/sum of powers of two | 1-128 | ספר_דיני_ממונות#29bw | 40) Question: if you want to know the sum of 1, 2, 4, 8, 16, and so on, each consecutive number is double the preceding number, and the last number is 128.
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Category | Comment | Link | Annotated text |
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sum/sum of powers of two | 4-32 | ספר_חשבון#ghpP | If he says: I started from 4 and doubled until 32. How much is their sum?
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Sum of Powers of Three
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Category | Comment | Link | Annotated text |
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sum/sum of powers of three | 1-27 | ספר_חשבון#mIQm | As 1, 3, 9, 27.
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Sum of Powers of Four
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Category | Comment | Link | Annotated text |
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sum/sum of powers of four | 1-16 | ספר_חשבון#aAn8 | As 1, 4, 16.
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Sum of Squares
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Category | Comment | Link | Annotated text |
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sum/sum of square numbers | 1-7 | ספר_המספר_/_אברהם_אבן_עזרא#ad1Q | Example: we wish to know how much are the squares up to seven?
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Category | Comment | Link | Annotated text |
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sum/sum of square numbers | 1-10 | קצת_מענייני_חכמת_המספר#EiRm | To know the squares of the natural numbers [that are set] in succession until whichever number you wish.
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sum/sum of square numbers | 1-10 | ספר_החשבון_לאל_חצאר#6e94 | Sum from the square of one to the square of ten by the succession of the numbers.![]() |
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Category | Comment | Link | Annotated text |
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sum/sum of square numbers | 1-12 | ספר_המספר_/_אברהם_אבן_עזרא#nrny | Another example: how much is the sum of the squares up to 12?
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Category | Comment | Link | Annotated text |
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sum/sum of square numbers | 5-12 | ספר_החשבון_לאל_חצאר#YeOS | If he said: sum from the square of five to the square of twelve.
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Sum of Cubes
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Category | Comment | Link | Annotated text |
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sum/sum of cubic numbers | 1-5 | ספר_המספר_/_אברהם_אבן_עזרא#mhj4 | Example: we wish to know how much is the sum of the cubes up to 5?
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