Learning Goal
Understand that the two digits of a two-digit number represent amounts of tens and ones
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
**1.NBT.B.2**: Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones - called a "ten."
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
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1.NBT.B.2: Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones - called a "ten."
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
What you'll learn
- Explain that the digit in the tens place tells how many groups of ten and the digit in the ones place tells how many extra ones
- Represent a two-digit number using bundles of ten and loose ones (e.g., 34 = 3 tens and 4 ones)
- Understand that 10 ones can be grouped into 1 ten - a "bundle" or a "ten"
- Decompose teen numbers (11-19) as one ten and some ones (e.g., 14 = 1 ten and 4 ones)
- Identify decade numbers (10, 20, 30, ... 90) as groups of tens with zero ones
Slides
Step through the lesson, or watch it as a narrated video
Slides
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