10 More, 10 Less

Find 10 more or less than a three-digit number using a hundred chart.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 17

This is part of a hundred chart. Each row has 10 numbers.
To find 10 more, go straight down one row. 10 more than 346 is 356. Only the tens digit changes!
To find 10 less, go straight up one row. 10 less than 346 is 336.
Your turn! Tap the number that is 10 more than 362.
Watch out at the end of a hundred! 10 more than 395 is 405. The tens were full, so we got a new hundred.

Georgia's K-12 Mathematics Standards:

2.NR.2.2 — Find 10 more or 10 less than a given three-digit number and find 100 more or 100 less than a given three-digit number.