Without using your spring scale, estimate the order of magnitude of the mass of your calculator in grams from what you judge to be its size, using the fact that the density of water is 1 g/cm3. Assume that the density of water is about the same as the density of your calculator. 1 g 102 g 104 g 106 g

using m(mass) = v(volume) x density The volume is calculated from the dimensions of the calculator estimated volume v= l(length) x w(width)x t(thickness) = 15cm x 10cm x1cm = 150cm3 mass = 1 x 150 = 150g which is 102g order of magnitude 
Ryan A.
27 September 2016
The size of a calculator is approximately 10 x 15 x 1 cm = 150 cm3, therefore the mass is approximately 150 g.
Antal K.
23 May 2019
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