Find the difference.

Question

​$20.9020.90minus−​$13.4213.42
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Part 1
​$20.9020.90minus−​$13.4213.42equals=​$ enter your response here
​(Type a whole number or a​ decimal.)

Answer 1

To find the difference between $20.90$ and $13.42$, you can perform the subtraction:

$$20.90-13.42$$

To line up the decimal points, you can visualize it like this:

  20.90
- 13.42
_______

Now, perform the subtraction starting from the rightmost column:

1. In the hundredths place: $0-2$ requires borrowing, so it turns into $10-2=8$ (borrowed $1$ from the tenths place).
2. In the tenths place: $8-4=4$ (after borrowing).
3. In the units place: $10-3=7$ (after borrowing $1$ from $2$).
4. In the tens place: $2-1=1$.

Putting it all together gives:

$$20.90-13.42=7.48$$

Therefore, the answer is:

$$\boxed{{\displaystyle 7.48}}$$