To estimate the quotient of 18.6 divided by 1.2, we can round the numbers to make the calculation simpler.
- Rounding 18.6 to the nearest ten gives us approximately 20.
- Rounding 1.2 to the nearest whole number gives us approximately 1.
So, the best expression to use for estimation is:
20 divided by 1.
However, among the options you provided, "20 divided by 1" isn't explicitly listed, but comparing the alternatives:
- 10 divided by 1 = 10
- 10 divided by 2 = 5
- 20 divided by 1 = 20 (best estimate)
- 20 divided by 2 = 10
Given the choices, the best alternative for estimating 18.6 divided by 1.2 is:
20 divided by 2 (which gives an estimate of 10).
So, if you need to select from the options, 20 divided by 2 would be the most reasonable choice.
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