(Blank)
12 rounded to the nearest tens
10
123+12=
135
231+24=
255
29 rounded to the nearest tens
30
45 rounded to the nearest tens
50
180+100=
280
4x6=
24
234 rounded to the nearest hundred
200
432 rounded to the nearest ten
430
4x5+7=
27
9+3+9+4=
25
871 rounded to the nearest hundred
900
43x5=
215
453 rounded to the nearest tens
450
67 rounded to the nearest tens
70