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SQUARES AND SQUARE ROOTS1.What are square numbers or perfect squares? Give examples?2.Find the perfect square numbers between (1) 30 and 40 ii) 50 and 603.List out all the perfect square numbers below 100.4.What are the ending digits (digits in one's place) of the square numbers?5.Which of the following 123², 77²,82²,161²,109² would end with digit '1' in its onesplace? What do you observe?6.Which of the following numbers 19²,24²,26² would have digit 6 in unit's place? Whatdo you observe?7.What will be the one's digit in the square of the following?i) 1234ii) 26387iii) 52698iv) 21222v) 91068.If a number contains three zeros at the last then how many zeros will its squarehave?9.The squares of which of the following would be odd number?i) 431ii) 2826iii) 7779iv) 82004 |
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Answer» 1) In mathematics, a square number or perfect square is an integer that is the square of an integer; in other WORDS, it is the product of some integer with itself. For example, 9 is a square number, since it can be written as 3 × 3. A perfect cube is a number that is the cube of an integer. For example, 125 is a perfect cube since 125 = 5 × 5 × 5= 53. Some examples of perfect cubes are 1, 8, 27, 64, 125, 216, 343, .. 2) (i) perfect square between 30 and 40 is only 36 (ii) there is no perfect square between 50 and 60 3) perfect squares below 100 are 1,4,9,16,25,36,49,64,81 4) 1,4,9,6,5 5) 161 and 109 6) 24 and 26 7) 6, 9, 4, 4, 6 9)431 and 7779 Hope it helps u Please mark it as brainleist |
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