Texas Math Models

Vertical number line

367 + 258 = 625 Grade 3

put the number between two multiples, then see which one it is nearer to the nearest tento the nearest hundred 370360 365 · halfway 367 past halfway → 370 400300 350 · halfway 367 past halfway → 400

How this one works

How

mark the number between two tens, then see which one it is closer to.

Best when

you are still learning what rounding means.

The same problem, other ways