A whole number has a 3 in the tens place. If the value of the 3 in a new number is ten times the value of the 3 in the original number, what must be true?
a. The 3 in the new number is in the ones place.
b.The 3 in the new number is in the tens place.
c.The 3 in the new number is in the hundreds place.
d. The 3 in the new number is in the thousands place
Answer:
c. The 3 in the new number is in the hundreds place.
Explanation:
A whole number is simply a counting numbers and can have differing numbers of digits in it. Whole numbers can be seen as natural numbers as it begin from 1 . Whole numbers are also positive integers and in this case we include 0.
In a whole number each digit has a fixed position called its place. For example in the number 235, the digit 5 is at one's or unit's place, digit 3 is at ten's place and digit 2 is at hundred's place.
In the question ;
X3Y – sentence 1
X3P × 10 = X3PA– sentence 2
Where the letters are unknown digits with known places.
Obviously from sentence 2 we see that the digit 3 has moved from the tenth place to the hundredth place.
