Place value, and how big a number isLesson 5 of 12
Rounding to the nearest ten
Count the steps to each ten. 17 is three steps from 20, so it rounds to 20.
Locked
Unlock the rest of Primary Mathematics: foundations.
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.