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प्रश्न
(–2) + (–5) + (–6) ______ (–3) + (–4) + (–6)
उत्तर
(–2) + (–5) + (–6) = (–3) + (–4) + (–6)
Explanation:
LHS = (–2) + (–5) + (– 6) = –2 – 5 – 6 = – (2 + 5 + 6) = –13
RHS = (–3) + (–4) + (– 6) = – 3 – 4 – 6 = – (3 + 4 + 6) = –13
On comparing LHS and RHS, we observe that – 13 = –13.
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संबंधित प्रश्न
A water tank has steps inside it. A monkey is sitting on the topmost step (i.e., the first step). The water level is at the ninth step.
1) He jumps 3 steps down and then jumps back 2 steps up. In how many jumps will he reach the water level?
2) After drinking water, he wants to go back. For this, he jumps 4 steps up and then jumps back 2 steps down in every move. In how many jumps will he reach back the top step?
3) If the number of steps moved down is represented by negative integers and the number of steps moved up by positive integers, represent his moves in part (i) and (ii) by completing the following; (a) − 3 + 2 − … = − 8 (b) 4 − 2 + … = 8. In (a) the sum (− 8) represents going down by eight steps. So, what will the sum 8 in (b) represent?
State, true or false of the given statement:
product of two integers can be zero.
Subtract the numbers in the top row from the numbers in the first column and write the proper number in each empty box.
| – | 6 | 9 | –4 | –5 | 0 | +7 | –8 | –3 |
| 3 | 3 – 6 = –3 | |||||||
| 8 | 8 − (−5) = 13 | |||||||
| –3 | ||||||||
| –2 |
Write the opposite of the following: An increase of 8
Add: 178 and -69
Multiply: (–746) by (–8)
Fill in the blanks:
(......) ÷ 17 = −2
Additive inverse of −23 is
`(-19)/5` lies between the integers __________ and __________
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 | – |
