1

Problem

What is the result of 24 × 3.1 × 2.8.

2

Step

Given problem

24 × 3.1 × 2.8

3

Step

Ignore the decimal point and multiply the two numbers usually

24 × 3.1 × 2.8 = 20832

4

Step

After multiplication, count the number of decimal places in the given decimal number

2

5

Step

Place the decimal point in the obtained product

208.32

6

Sumup

Please summarize steps

Choices

7

Choice-A

This is not correct. Because it is much higher than the correct result

Wrong 685.284

8

Choice-B

This is the correct result. It’s the product of 24 × 3.1 × 2.8, as calculated above

Correct 208.32

9

Choice-C

This is incorrect, and it is similar to option a, probably due to a miscalculation

Wrong 685.24

10

Choice-D

This is incorrect, and it doesn’t match the expected product from the correct multiplication

Wrong 215.48

11

Answer

Option

B

12

Sumup

Please summarize choices