You could estimate 60/3, but 57/3 is 29.
When a quick and approximate answer will suffice.
Use estimation when an approximate answer is acceptable.
60/3 = 20
Estimation is a quick of working out roughly what the answer is
57/3 = 19
front end estimation means to use only the whole number part of the decimal. we only use whole numbers to do front end estimation
the DNSA method use sugar estimation.
The difference between a measurement and an estimation is that a measurement is an exact data while an estimation is a guess as to what something may measure. For example, you can use a ruler to get the exact measurements of a piece of paper. However, if you don't have a ruler, you can make an educated guess as to what the paper's length and width measurements may be.
Use rounding and estimation to predict the approximate quotient of 285 ÷ 11.