CCSS K.MD.B.3 Worksheets
Kindergarten · Measurement & Data
Sort objects into categories and count how many are in each category.
Below are free printable worksheets that support K.MD.B.3. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
Teaching guide
What students learn
Sort objects into categories and count how many are in each category.
How to teach it
Count real objects out loud, touching each one once, then match the count to the written numeral. Practise counting on from a number, not always from one.
Worked example
7, 8, ___, 10, 11
Answer: 9
Generated and checked in code, so it is correct.
Watch out for
Skipping or double-counting objects (weak one-to-one correspondence), and thinking the last number said is just a label rather than the total.