can someone help me in maths

label Mathematics
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Nov 1st, 2014

An estimate of 5.1 x 98 would be 5 x 100 or 500.


An estimate for (302 x 9.96) / (0.51) would be: (300 x 10 x 2) or 6000.  (Dividing by 0.5 is the same as multiplying by 2 because 0.5 = 1/2.  Remember that when you divide by a fraction, you flip it upside and multiply).


An estimate for (31 x 4.92)/(0.21) is (30 x 5 x 5) or 750.  (Dividing by 0.2 is the same as multiplying by 5, because 0.2 = 1/5)

Nov 1st, 2014

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Nov 1st, 2014
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Nov 1st, 2014
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