Subtract numbers:
| \(\displaystyle -\) | \(\displaystyle 9\) | \(\displaystyle 4\) | \(\displaystyle 2\) |
| \(\displaystyle 4\) | \(\displaystyle 7\) | \(\displaystyle 6\) | |
1. From the ones of the number \(\displaystyle 94\underline{2}\) (this is the number \(\displaystyle 2\)) we subtract the ones of the number \(\displaystyle 47\underline{6}\) (this is the number \(\displaystyle 6\)):
\(\displaystyle 2 – 6{\small .}\)
But \(\displaystyle 2\) is less than \(\displaystyle 6\), so we borrow one from the tens of the number \(\displaystyle 9\underline{4}2\) and subtract:
\(\displaystyle 10 + 2 - 6 = 12 - 6 = 6{\small .}\)
| \(\displaystyle {\small -1}\) |
| \(\displaystyle –\) | \(\displaystyle 9\) | \(\displaystyle 4\) | \(\displaystyle \color{red}{2}\) |
| \(\displaystyle 4\) | \(\displaystyle 7\) | \(\displaystyle \color{red}{6}\) | |
| \(\displaystyle ?\) | \(\displaystyle ?\) | \(\displaystyle \color{red}{\bf6}\) |
2. From the tens of the number \(\displaystyle 9\underline{4}2\) (this is the number \(\displaystyle 4\)) we subtract the tens of the number \(\displaystyle 4\underline{7}6\) (this is the number 7), taking into account that we borrowed one from the the tens in the previous step:
\(\displaystyle (4−1)−7 = 3 - 7{\small .}\)
The number \(\displaystyle 3\) is less than \(\displaystyle 7\), so we take one from the hundreds of \(\displaystyle \underline{9}492\) and subtract:
\(\displaystyle 10 + 3 - 7 = 13 - 7 = 6{\small .}\)
| \(\displaystyle {\small -1}\) | \(\displaystyle \color{red}{\small {\bf-1}}\) | \(\displaystyle \) |
| \(\displaystyle +\) | \(\displaystyle 9\) | \(\displaystyle \color{red}{4}\) | \(\displaystyle 2\) |
| \(\displaystyle 4\) | \(\displaystyle \color{red}{7}\) | \(\displaystyle 6\) | |
| \(\displaystyle ?\) | \(\displaystyle \color{red}{\bf6}\) | \(\displaystyle 6\) |
3. From the hundreds of the number \(\displaystyle \underline{9}42\) (this is the number \(\displaystyle 9\)) we subtract the hundreds of the number \(\displaystyle \underline{4}76\) (this is the number \(\displaystyle 4\)), given that we borrowed one from the hundreds of the number \(\displaystyle \underline{9}42\) in the previous step:
\(\displaystyle (9 - 1) - 4= 8 - 4 = 4{\small .}\)
| \(\displaystyle \color{red}{\bf{\small -1}}\) | \(\displaystyle \) | \(\displaystyle \) |
| \(\displaystyle -\) | \(\displaystyle \color{red}{9}\) | \(\displaystyle 4\) | \(\displaystyle 2\) |
| \(\displaystyle \color{red}{4}\) | \(\displaystyle 7\) | \(\displaystyle 6\) | |
| \(\displaystyle \color{red}{\bf4}\) | \(\displaystyle 6\) | \(\displaystyle 6\) |
Answer: \(\displaystyle 266{\small . }\)