Montana Math MT.2.NBT.1

Math2nd GradeNumber and Operations in Base Ten

The Standard

Understand one hundred is a unit composed of ten tens and that three-digit numbers represent amounts of hundreds, tens, and ones.

2026 Montana Mathematics Content Standards

Teacher's field guide

What Students Need to Do: Students bundle objects into groups of ten, then trade ten bundles for one hundred. They use digit positions to build and describe numbers such as 407.
What Mastery Looks Like: Given 362, a student can sketch 3 hundreds, 6 tens, and 2 ones and explain why the 3 means 300. They can trade ten tens for one hundred without changing the total.
Common Misconceptions: Students may read 407 as 4 hundreds and 7 tens because they skip the zero. They may think ten tens make ten, or that the digit 4 always means four.
How to Assess It: Exit ticket: Draw a trade of ten tens for one hundred. Then draw 304 with base-ten blocks and label each place.

Lesson moves

Give pairs ten bundles of ten craft sticks; have them swap the bundles for a card marked 100 and explain the trade.
Ask partners why 508 has no tens and why its 5 means 500; have them sketch proof.
Deal three digit cards with a nonzero hundreds card; students build the number with base-ten blocks and name each digit's value.
Show a 246-page book; ask students to sketch its page count as hundreds, tens, and ones.

Free download

$Preview of the MT.2.NBT.1 printable worksheet$

A ready-to-print activity worksheet aligned to MT.2.NBT.1, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

Keep exploring

Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.