7×106
= 7,000,000
(the decimal point went to the right by 6 digits)
8×10-4
= 0.0004
(the decimal point went to the left by 4 digits)
What is place value?
7 + 0.5 + 0.04 + 0.003+ 0.0002
= 7.5432
8.5 + 0.004+ 0.0005
= 8.5405
Equivalent fractions are used to compare the sizes of fractions written with a different denominator
Terminating decimals stop after a finite number of decimal places.
Example: 0.315
Terminating decimals can be written as exact fractions with denominator 10, 100, 1000, etc. and then cancelled down when possible.
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