4.45/5 = .89 ea therefore if you multiply .89 by 7 you would get $6.23
If you want to estimate to the tens, the answer is 680
If you want to estimate to the hundreds, the answer is 700
If you want to estimate to the thousands then the answer would be not an answer
The real answer without estimating is 681
B, d, e, f
they all equal 64
