You can enter your UK Pension on the Foreign Slip page: https://turbotax.community.intuit.ca/replies/2647976

I entered my husbands pension from the UK in the correct box

in canadian dollars, but when it printed out the T1 General it came out a different amount. i.e.: 11,100.00 came out 1,100.00

The change in your pension amount is based on the rate that is entered in the exchange rate box. If you are entering your foreign pension in Canadian dollars leave the exchange rate box blank and vice versa, if you are entering your pension in the foreign currency received, enter the conversion rate used in the exchange rate box. Please review your foreign slip entries.  See screenshot attached.