Answer: 154: 200 145: 100
Step-by-step explanation:
If the number next to the place value is 5 or more you round it up. Like I did 154. But if the number is less that 5 you put everything to zero EXCEPT for the place value you are rounding. Good Luck
8 * 54 = 8 * 50 + 8 * 4 = 8(50 + 4)
If you mean like half then 31?
The answer to your question is YES!