I don't quite understand the ten strategy, or what EXACTLY you're asking. But, what you can do is when you add a one digit number plus a nine, just change the nine to a ten and subtract one. It is very easy. So, 7+10 equals 17, subtract one and you get 16 which is 7+9. It is always one less than anything plus 10.
Hey there!
The full area equals . .
Your correct answer would be

Hope this helps.
~Jurgen
5/12 is your answer to 5/6 times 1/2
Answer:
x<0
Step-by-step explanation:
Answer:
no u may nit know this answet