Your estimate will be greater than the exact number.
over-estimate
less than
Assuming that the estimate is based on sensible approximations, there is no simple way. You will need to compare the estimate and the true value. If you've rounded up, the estimate will be greater. If you've rounded down, the estimate will be less.
When you round both factors in a multiplication problem up, your estimate will be greater than the actual product.
0 is in the exact middle of the number line. All positive numbers are to the right of 0 (greater than 0) and all negative numbers are to the left of 0 (less than 0). So no, -8 is not greater than 0.
199 over 198 estimate = 1 actual answer would be greater than 1 35 over 17 estimate = 1 actual answer would be greater than 1
Underestimate?
They are the exact same number. You can add as many 0s as you want to the right of the number and the value does not change.
ANY number greater than the number before the greater than, so if the answer is greater than 7 then one solution is 7.00000000000000000000000000000000001
100% equals the number. Less than 100% is less than the number. Greater than 100% is greater than the number.
An upper bound estimate is a estimate that is greater than the actual solution.