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प्रश्न
Find the square of 391
योग
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उत्तर
(391)2 = (400 − 9)2
= (400)2 + 92 + 2 (400) (9)
= 160000 + 81 − 7200
= 152881
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संबंधित प्रश्न
Expand : (2a + b)2
Find the square of 2x − 5y
Find the square of x − 2y +1
Find the square of 3a − 2b − 5c
Write the place value of the underlined digit.
89,99,988
Write the following numbers in standard notation
30000 + 3000 + 300 + 30 + 3
Write the following numbers in standard notation.
4000000 + 400 + 4
Circle the correct one.
| a | 5 thousand + 3 hundred + 2 ones | 5320, 5302 |
| b | The place value of 5 in 3758 | 50, 500 |
| c | Three thousand six hundred and sixty | 3060, 3660 |
| d | 4000 + 600 + 90 | 4690, 4609 |
Write in expanded form:
574021
Write in expanded form:
8907010
