how do you do these

Question

17.23+8.9

5.0012-3.746

14.01-0.83

5.3*7

 

please answer asap

Answer 1

When adding or subtracting decimals, make sure you line up the decimal points and add vertically normally.

 ₁₁ 

 17.23

+ 8.90

 26.13

 

  5.0012

- 3.7460

 

etc.

 

When multiplying, ignore the decimal points until the end, then count the total number of digits after the decimal in both factors. Put the decimal place in the answer this many digits from the right end.

 

  5.3

  * 7

   21

 350

 371

 

5.3 has one decimal digit, 7 has none, so one total.

 

The answer is 37.1