Wyoming Math 2.NBT.1c
The Standard
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; and demonstrate that: Three-digit numbers can be decomposed in multiple ways (e.g., 524 can be decomposed as 5 hundreds, 2 tens and 4 ones or 4 hundreds, 12 tens, and 4 ones, etc.)
2023 Wyoming Mathematics Content and Performance Standards · Understand place value.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students show a three-digit number using hundreds, tens, and ones. They trade one hundred for ten tens or one ten for ten ones without changing the total.
What Mastery Looks Like
- For 352, a student can show 3 hundreds, 5 tens, and 2 ones, then trade to show 2 hundreds, 15 tens, and 2 ones. They can explain the trade with blocks or a sketch.
Common Misconceptions
- Students may think the number of tens cannot be greater than 9. Some trade one ten for one one instead of ten ones, or think a trade changes the total.
How to Assess It
- Write 463 in two ways using hundreds, tens, and ones. Make one way have fewer than 4 hundreds, and draw the trade you made.
Lesson moves
Ways to Teach It
Build 352 with base-ten blocks, trade one hundred flat for ten rods, and record both forms.
Ask partners, 'Can 463 be 3 hundreds, 16 tens, and 3 ones?' Have them sketch a trade and explain.
Give pairs cards labeled 426, 513, and 782; have them race to write two forms for each number and check with blocks.
Hand out play $100, $10, and $1 bills; have students make $352 two ways by exchanging one $100 bill for ten $10 bills.
Free download
Printable 2.NBT.1c Worksheet
A ready-to-print activity worksheet aligned to 2.NBT.1c, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetKeep exploring
Related Standards
- 1.NBT.4c
Understand that in adding two-digit numbers, adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
- K.OA.3
Decompose numbers less than or equal to 10 in more than one way.
- 2.NBT.7b
Understand that in adding or subtracting three-digit numbers, add or subtract hundreds and hundreds, tens and tens, ones and ones.
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.
Also for this standard:Make a WorksheetMake a QuizMake a Sub Lesson