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What is noticeable about the sum in the multiples of 9?
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
A number is divisible by 9 if?
If the sum of its digits add up to 9
What do you notice about the sum of the digits for each multiple of 9?
That they add up to 9
What number can 9 be divided by?
If the sum of its digits add up to 9 then it is divisable by 9
What is the divisibility of 9?
3Any number whose digital sum add up to 9 is divisible by 9
Algebra with pizzazz page 223?
holdupabank
What is the answer to algebra with pizzazz page 33?
1/5n=-9
What is noticeable about the sum in the multiples of 9?
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
How do you find the sum of factors?
Add them up. The factors of 9 are 1, 3 and 9. The sum of the factors is 13.
What is the sum of a quantity and its opposite?
sum of a quantity means simply that you add things up. For example the sum of 2,3 and 4 is 9 and the opposite is -9
15 plus 9 plus (-9)?
They sum up to 15
A number is divisible by 9 if?
If the sum of its digits add up to 9
What is the divisibility rule for 9?
If you add up the digits, and the sum is divisible by 9 or a multiple of 9.* * * * *For really big numbers you may need to find the digital root (sum of digits) of the digital root.The divisibility rule for 9 is that the sum of the digits of a number must add up to 9 or a multiple of 9.For example, is 81 divisible by 9? Lets find out! 8+1=9. Then it is divisible by 9.
What do you notice about the sum of the digits for each multiple of 9?
That they add up to 9
Divisibility rule for 9?
If the digit sum of a number adds up to 9 then it is divisible by 9.
How do you know a number is divisible by 9?
If its digital sum add up to 9 then it is divisible by 9
What is the answer to middle school math with pizzazz page E-9?
What should the Jolly Green Giant receive? The Nobel Peas Prize Why did it take the Goat more than 3 hours to finish a 20-page book? He wasnt very hungry
