Mentally adding hundreds to 3-digit numbers
Mathematics · Addition & Subtraction · procedural
Mentally add and subtract a three-digit number and hundreds
What mastery looks like
- Calculate 345 + 200 mentally
- Calculate 762 − 400 mentally
- Explain that only the hundreds digit changes
Check your understanding
Can Mentally adding hundreds to 3-digit numbers quickly work out '342 + 200' or '756 − 300' in their head — knowing that only the hundreds digit changes?
Prerequisites
Required first
Unlocks (0 directly)
None.