The number 0123456789 can't be reused in the following grid A few + a few = a few + a few = a few + a few = a few + a few = for example, 1 + 2 = 3 + 4 = 9 + = + = is there a question on this topic? I can't answer it. Please help me

Don't you have a zero? Aren't the following nine "JIS"?
1+8=2+7=3+6=4+5=9

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1. Fill in the addition box with the ten numbers 0123456789 respectively () + () = () + () = () + () = () + () = () + () = () + () = () + () Thank you, brothers and sisters
2. Fill in the 10 numbers of 0123456789 in (), () + () = () + () = () + () = () + () = () + () = () + () 0123456789 each number can only be used once
3. How many six digits do the ten numbers 0-9 make up The numbers can be used repeatedly. These six digits are divided into two groups, with a space in the middle, and 0 can be used as the beginning. For example, (110 225) (011 325) (199 001) (558 009) (333 456) (708 555) (000 222) below What do you think of the answer on the first floor···
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