false
he commander's estimate of the situation is a clear and concise expression of the purpose of the operation and the military end state.
true
The word estimate is for a number, irrespective of the arithmetical operation involved. However, how you estimate for a number DOES depend on the operation. For example, if adding (or subtracting) 0.00496 form 123456, I would estimate 0.0049 as 0. But, it multiplying or dividing I would estimate it as 0.005 - it all depends on the context of the arithmetic operation.
Probability
To provide a more reasonable estimate for the expression in exercise 20, it is important to consider the context and the values involved. Analyzing the components of the expression, you can simplify or round the values to make calculations easier, while still maintaining a level of accuracy. This approach will yield an estimate that is more manageable and relevant to the problem at hand. Ultimately, the goal is to balance simplicity with reliability in the estimate.
An estimate is related to a number, not an arithmetic operation. Having said that, the estimate MUST take account of the context of the operations (+-*/).
20 and 50 don't need an estimate. You can perform any operation on them just they way they are.
the amount of medicine to give a patient
80 x 8000 = 640000
7000 x 600 = 4200000
If you want to use a rational number for a mathematical operation, it will be necessary to estimate it for a numerical outcome. Irrational numbers can't be written out exactly.
A rough estimate is given when the situation does not require the exact numbers to be given.