Question

Alba needed to know about how much the sum of 19.6, 23.8, and 38.4 is. She correctly rounded each of these numbers to the nearest whole number. What three numbers did she use? *
A 19, 23, 23
B 19, 24, 38
C 20, 24, 38
D 20, 24, 39

Answer 1

If the number after the decimal is 1-4 you drop it, if it's 5-9 you add one to the whole number. In 19.6, 6 is 5-9 so you add one to 19- 19.6=20. In 23.8, 8 is 5-9 so add one to 23- 23.8=24. In 38.4, 4 is 1-4 so you drop it- 38.4=38. So the answer is C. 20, 24, 38 :) hope this helps