Its maybe true because 9x11=99 or maybe not because only 9x11=99 and the other ones are other numbers for example 3x9=27 and you could do 1x9=9 instead anything else like 4x9=36 so Ithink is sometimes.
yes joel because all you have done is the nine times tables can you find a two diget number that ends in nine and if you can set your self a challenge try a three diget number like
That is false 9 times 9 is 81 that shows that not true.
ReplyDeleteWhat is 8 + 1 Adrian?
DeleteIts maybe true because 9x11=99 or maybe not because only 9x11=99 and the other ones are other numbers for example 3x9=27 and you could do 1x9=9 instead anything else like 4x9=36 so Ithink is sometimes.
ReplyDeleteStill thinking about the number 9, can anyone tell me what the notice about the sum of the digits in the answer to 9 x 11?
Deleteits never true that when you multiply a number by 9,the sum of its digits is also 9.
ReplyDelete9x1=9
ReplyDelete9X2=18
9x3=27
9x4=36
9x5=45
9x6=54
9x7=63
9x8=72
9x9=81
9x10=90
9x11=99
9x12=108
It is sometimes true because if you times 9 and the other number ends in 1 it will have 9 as a digit
DeleteFor example
9x1=9 or9x11=99 9+9 or 9x2 is 18 which is not 9 2x9=18+1=19
In how many of your answers Joel, does the sum of the digits equal 9?
Deleteyes joel because all you have done is the nine times tables can you find a two diget number that ends in nine and if you can set your self a challenge try a three diget number like
Delete909x1=909
The combinations you made Joel you can make to 9 time tables is 2 answers that end with 9
Deletelook carefully at the nie times table and youll see the numbers do add up to nine look
ReplyDelete2x9=18
but look 18 seperate the numbers 1 8 and add them 1+8=9
sometimes when you times by nine it has a nine.
ReplyDelete9+9+9+=26
ReplyDelete10+10+10=30
20+20+20=60
30+30+30=90