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प्रश्न
Add: -493 and 289
उत्तर
\[\begin{array}{r}
&-493\\
+&289\\
\hline
&-204
\end{array}\]
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संबंधित प्रश्न
Indicate the following using '+' or '−' sign: 2 km above sea level
Write the predecessor of the following: −300
The sum of two integers is −13. If one of the numbers is 170, find the other.
Simplify: (−9) × 6 + (−9) × 4
Fill in the blanks:
(......) ÷ 372 = 0
Write (T) for true and (F) for false for the following statement:
(−1) ÷ (−1) = −1
49 + (−27) = ?
Evaluate: 8 + (−16)
If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer, write the following using integers with the appropriate signs:
Sea level
An atom changes to a charged particle called ion if it loses or gains electrons. The charge on an ion is the charge on electrons plus charge on protons. Now, write the missing information in the table given below:
| Name of Ion | Proton Charge | Electron Charge | Ion Charge |
| Hydroxide ion | +9 | – | –1 |
| Sodium ion | +11 | – | +1 |
| Aluminium ion | +13 | –10 | – |
| Oxide ion | +8 | –10 | – |
