When rounding to the hundredths place, look at the thousandths. If that number is 4 or less, zero it and anything to the right of it out.
2.934 rounds down to 2.93
293, rounded to the nearest hundred, would be 300.
0.116
290
4.8
300
The product is 2934
0.0017
-584
2934
978 x 3 = 2934
280
18% of 293= 18% * 293= 0.18 * 293= 52.74