Fill in the blanks to make each of the following a true statement:
`phi'nnA = _________`

Fill in the blanks to make the following a true statement : phi' nn A=...

Fill in the blanks to make the following a true statement : A uu A'=...

Fill in the blanks to make the following a true statement : A nn A'=...

Fill in the blanks to make the following a true statement : U' nn A = ...

Fill in the blanks to make each of the following a true statement: 19 xx 0 = ...................

Fill in the blanks to make each of the following a true statement: 0 xx 13434 = ............

Fill in the blanks to make each of the following a true statement: 1000 xx 100 = ..............

Fill in the blanks to make each of the following a true statement: 37 x 18 = 37 x 9 + 37 ...

Fill in the blanks to make each of the following a true statement: 21 xx 13 = 13 xx ................. .

Fill in the blanks to make each of the following a true statement: 17 xx (19 xx 15) = (.............. xx 19 ) xx 15