Is it reasonable?
4,367 + 2,258 = 6,625 Grade 4
How this one works
How
compare your estimate to your exact answer; are they close?
Best when
you have finished and want to know if you can trust it.
The same problem, other ways
Try “number line” or “4.5D”
4,367 + 2,258 = 6,625 Grade 4
How this one works
compare your estimate to your exact answer; are they close?
you have finished and want to know if you can trust it.
The same problem, other ways