Option D
*Rounding 18 to 20, and 20x20=400
not a resonable question
That equals 559. If you have to, estimate 210 + 350 = 560
100 That is an estimate.
You don't need to estimate, it equals 18
nothing at all
38.5
0.1902
7x87 is about 7x90, which equals 630
If 8.81 + 2.78 = 8.8 plus Xthen, since 8.81 is nearly equal to 8.8 a good estimate for X is 2.78.
i would say 62 but it is 61.8
300+60=360
19