Number & Base Ten

Use this for “What is 274 rounded to the nearest hundred?”

Use this for “About how many?” and to check a sum by rounding.

Use this for “612 children, 287 at lunch. About how many are in class?”

Use this for “Find the value of 400 − 162” or “503 − 207.”

Use this for “The library had 526 books. It lent out 248. How many are left?”

Use this for “8 boxes of 40 pencils. How many pencils?”