Blake’s balance in his checking account at the beginning of the month was $42.68. Blake’s bank statement for this month showed the following withdrawals and deposits in his checking account: $35.42, $-13.55, $52.12, $11.50, $-17.33, $-21.45.
How much more money does Blake need to buy a pair of tennis shoes that cost $135.98?
is there some reason you could not do all those adds and subtracts on your calculator? After all the transactions, Blake has
42.68+35.42-13.55+52.12+11.50-17.33-21.45 = 89.39
so, what do you think?