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Review Grade-7

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  • Find the value S= ut +1/2 at^2 u= 4, t=3, a=2
    17
  • Find the HCF and LCM of 72 and 120 by using prime factor.
    HCF= 2^3 x 3 , LCM = 2^3 x 3 x 3 x 5
  • Work out-(-3)^2 (-3)^3
    (a) 9 (b) -27
  • Koa says, I think of a number, multiply it by 4 and add 5. my answer is 49.' Write an equation.
    4x+5
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