The basic idea is the same as when you estimate sums and differences of larger numbers (which may or may not be integers). You round the numbers to one or two decimal digits, then add them up.
In the same way as you estimate them for whole numbers.
you have to add
Alike is the same as Differences means subtractions Sums means additions Quotients means divisions Products means multiplications
I think you round it to the nearest whole number...
68
In the same way as you estimate them for whole numbers.
One way is to do front end estimation!
0.7 + 0.9 = 1.6 0.7 - 0.9 = -0.2
When you do not require an exact answer but an approximation is sufficient.
150 - 4000 - 600 = -4450
xxx=2x
you have to add
Alike is the same as Differences means subtractions Sums means additions Quotients means divisions Products means multiplications
distributive property
I think you round it to the nearest whole number...
68
The number is already in decimal form so why would you want to estimate it in decimal form???