Question

(100 + __ )+ 290 - 67.0034 = 411.9966

Answer 1

(100 + __ )+ 290 - 67.0034 = 411.9966

First add 67.0034 to both sides:

(100 + __ )+ 290 = 479

Now subtract 290 from both sides:

(100 + __ ) = 189

Subtract 100 from both sides:

189-100 = 89

The missing value is 89