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CLASS -VII Mathematics (Exponents and Powers), , Choose correct option in questions 1 to 4., , =, , . Find the value of (—9)° x (—4)?., a) -11664, b) 36, c)5, d) 25, 2. Simplify: 7” x 7?, a) 7x+3, b) 7xt2, c) 72x, d) 7x2, . Which is greatest among the following?, a) 82, b) 48, c) 28, d) 32, 4. Find the value of (6° — 2°) x (6° + 2°)., a)2, b)1, c)3, do, In (-9)4, the base is, (-1)4 is equal to__., (a%)¥ = __, What should be added to 2y? - 4yz - 2z2 to get y2 - 2yz z2,, Express the following numbers in the standard form., a) 5,223,000,000, b) 256,000,000, 10. Simplify and write the answer in exponentialform., a) 37+ 34, b) 58+ 54, . Find m when (2)° x (2)° = (2, , wo, , and the exponent is 4., , , , oN So, , so, , 1 ae, , =