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Nine and one tenth in mixed number is written like this:

1

9 ------

10 (9 and 1 tenth)

Nine and one tenth in decimal is written like this: 9.1

1

9 ------

10 (9 and 1 tenth)

Nine and one tenth in decimal is written like this: 9.1

A nine and one tenth means nine added to one-tenth.

Nine and one tenth is written like this: 9------ 1 (10) (9 and 1 tenths)