5 tens
Ten-Groups = 10 + 10 + 10 + 10 + 10
Ten-Groups = 50
0 ones
50 = 0 Hundreds + 50 Tens + 0 ones
50 = 0 + 50 + 0
Show numerical properties of 50
50
fifty
Decompose 50
Each digit in the whole number represents a power of 10:
Take the whole number portion on the left side of the decimal
Expanded Notation of 50 = (5 x 101) + (0 x 100)
Expanded Notation of 50 = (5 x 10) + (0 x 1)
50 = 50 + 0
50 = 50 <---- Correct!
Make blocks of 5
1 tally mark = |
2 tally marks = ||
3 tally marks = |||
4 tally marks = ||||
5 tally marks = | | | |
5 = | | | |
10 = | | | |
15 = | | | |
20 = | | | |
25 = | | | |
30 = | | | |
35 = | | | |
40 = | | | |
45 = | | | |
50 = | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Define an ordinal number
A position in a list
50th
Calculate the digit sum of 50
Calculate the reduced digit sum of 50
Digit Sum → 5 + 0 = 5
Since our digit sum ≤ 9:
we have our reduced digit sum
Digit Sum → 5 + 0 = 5
Calculate the digit product of 50
Digit Product = Value when you multiply
all the digits of a number together.
We multiply the 2 digits of 50 together
Digit product of 50 = 5 * 0
Digit product of 50 = 0
Opposite of 50 = -(50)
Opposite of = -50
Place value describes each digit
5 is our tens digit
This means we have 5 sets of tens
0 is our ones digit
This means we have 0 sets of ones
5 is our tens digit
0 is our ones digit
When ey = x and e = 2.718281828459
We have Ln(x) = loge(x) = y
Ln(50) = loge(50) = 3.9120230054281
Is 50 divisible by:
2,3,4,5,6,7,8,9,10,11
Last digit ends in 0,2,4,6,8
The last digit of 50 is 0
Since 0 is equal to 0,2,4,6,8:
then 50 is divisible by 2
Sum of the digits is divisible by 3
The sum of the digits for 50 is 5 + 0 = 5
Since 5 is not divisible by 3:
Then 50 is not divisible by 3
Take the last two digits
Are they divisible by 4?
The last 2 digits of 50 are 50
Since 50 is not divisible by 4:
Then 50 is not divisible by 4
Number ends with a 0 or 5
The last digit of 50 is 0
Since 0 is equal to 0 or 5:
Then 50 is divisible by 5
Divisible by both 2 and 3
Since 50 is not divisible by 2 and 3:
Then 50 is not divisible by 6
Multiply each respective digit by 1,3,2,6,4,5
Work backwards
Repeat as necessary
0(1) + 5(3) = 16
Since 16 is not divisible by 7:
Then 50 is not divisible by 7
Take the last three digits
Are they divisible by 8
The last 2 digits of 50 are 50
Since 50 is not divisible by 8:
Then 50 is not divisible by 8
Sum of digits divisible by 9
The sum of the digits for 50 is 5 + 0 = 5
Since 5 is not divisible by 9:
Then 50 is not divisible by 9
Ends with a 0
The last digit of 50 is 0
Since 0 is equal to 0:
Then 50 is divisible by 10
Σ odd digits - Σ even digits = 0
or 50 is a multiple of 11
50
5
Odd Sum = 5
50
0
Even Sum = 0
Δ = Odd Sum - Even Sum
Δ = 5 - 0
Δ = 5
Because Δ / 11 = 4.5454545454545:
Then 50 is NOT divisible by 11
50 is divisible by
(2,5,10)