1

Problem

Rearrange numbers in the descending order:

45.3, 56.3, 55.1, 63.4, 65.2.

2

Step

In this problem, all numbers have one digit after the decimal point.

3

Hint

When comparing decimals with the same digits after the decimal point, the one with the larger whole number part is larger.

4

Clue

If the whole number parts are also the same, compare the tenths place (the first digit after the decimal point).

5

Step

Comparing the leftmost digit, we can see that 65.2 has the highest digit among all five numbers.

6

Step

If the decimal places are the same, continue comparing digits to the right.

7

Step

Among 45.3, 56.3, 55.1, and 63.4, 63.4 has the highest digit.

8

Step

Finally, we compare the whole number before the decimal point. 56.3 has a higher digit than 55.1 and 45.3.

9

Solution

Therefore, arranging these numbers in descending order gives us: 65.2, 63.4, 56.3, 55.1, and 45.3.

10

Sumup

Please summarize steps

Choices

11

Choice-A

It does not reorder the numbers; it lists them in the original (mixed) order rather than in descending order. Thus, it is incorrect

Wrong 45.3, 56.3, 55.1, 63.4, 65.2

12

Choice-B

Although this option starts with the largest number, it includes 56.1 and 55.3 instead of 56.3 and 55.1, which are incorrect values. So, option B is incorrect

Wrong 65.2, 63.4, 56.1, 55.3, 45.3

13

Choice-C

The order is wrong; the numbers are mixed up and not sorted correctly

Wrong 45.3, 56.3, 55.4, 63.1, 65.2

14

Choice-D

Correct order. As stated before, this is the right arrangement in descending order

Correct 65.2, 63.4, 56.3, 55.1, 45.3

15

Step

Option

D

16

Sumup

Please summarize choices