For the second one remember that mach is a ratio, therefore a linear scale. Hence a change of M 0.1 (i.e. 1/10th local speed of sound(LSS)) corresponding to a change of 57 kt TAS indicates that the LSS is 10 x 57 = 570 kts. The 1100 kts is a red herring (useless information put in to confuse, for the non-English here).
My CRP-5 is at work, but that should tell you the local temperature (-59°C by the formula, but check on the CRP-5 since this is a CRP question). Since ISA at FL 650 is -56.5°C then -3° deviation sounds about right.
Hope this helps, any more problems feel free to email/message me.
Richard Dale,
Gen Nav instructor, Bournemouth Commercial Flight Training Centre