7x87 is about 7x90, which equals 630
The best estimate is the true value.
5,200
109?
25x80 < 28x87 < 30x90 --> 2000 < 28x87 < 2700?
87+7= 94
0.0805
87 multiplied by 624 is 54,288.
35 multiplied by 87 is 3,045.
87 x 64 = 5568
It is 91 times 87 = 7,917
87 multiplied by 98 is 8,526.