57+45=. ;52-5= ; 66-58= ; 24+28= ; 77+7= ; 41+43= ;

Fifty seven plus forty five is one hundred and two.

Fifty two minus five is forty seven.

Sixty six minus fifty eight is eight.

Twenty four plus twenty eight is fifty two.

Seventy seven plus seven is eighty four.

Forty one plus forty three is eighty four.

Thirty four plus one hundred is one hundred and thirty four.

Twenty three plus twenty eight is fifty one.

Twelve plus one hundred and twenty two is one hundred and thirty four.

Fifty six minus twenty one is thirty five.