Express 4956×25=123,900 in the form of 495.6×2.5 4956=4956.0 (Every whole number has .0 ) 25=25.0 (Every whole number has .0 ) 4956=495.6×101 Note: The decimal point is moved to the left once, hence the power is 1 25=2.5×101 495.6×101×2.5×101=123,900 495.6×2.5×101×101=123,900 a1=a,101=10 495.6×2.5×10×10=123,900 10×10=100 495.6×2.5×100=123,900
Divide both sides by 100 so that you obtain 495.6×2.5 as requested by the question. 495.6×2.5=
123900
100
Note: The zeros (0) in 123900 and 100 cancel each other. 495.6×2.5=1239 495.6×2.5=1.239×103 in standard form Note:1239 = 1239.0 For standard form, the decimal point must be after the first non-zero digit. We must therefore move the decimal point three times to the left and multiply by 10number of moves (3) .