Curriculum / Math / 2nd Grade / Unit 4: Place Value with Numbers to 1,000 & Money / Lesson 5
Math
Unit 4
2nd Grade
Lesson 5 of 22
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Lesson Notes
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Use unit form to represent three-digit numbers using understanding of place value and base ten.
I can use unit form to write, read, and represent three-digit numbers.
The core standards covered in this lesson
2.NBT.A.3 — Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
The foundational standards covered in this lesson
1.NBT.A.1 — Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
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:
The essential concepts students need to demonstrate or understand to achieve the lesson objective
Suggestions for teachers to help them teach this lesson
In the second set of lessons in Topic A, students learn to write, read, and represent numbers in various forms. Moving from concrete and pictorial representations to unit form allows for a smooth transition and opportunity for students who need more additional support to model or use concrete manipulatives when introducing the idea of unit form.
5-10 minutes
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Tasks designed to teach criteria for success of the lesson, and guidance to help draw out student understanding
15-25 minutes
Write the number that is described. Explain your thinking.
a. 2 hundreds, 9 tens, 7 ones
b. 5 ones, 6 tens, 4 hundreds
c. 7 hundreds, 8 ones
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Molly only has tens and ones to represent the following numbers. How many tens and ones would she need for the following numbers?
a. 455 = ___ tens ___ones
b. 780 = ___ tens ___ones
c. 309 = ___ tens ___ones
What is the number?
a. 5 hundred 16 tens
b. 8 hundreds 3 tens 12 ones
c. 3 hundreds 14 tens 2 ones
Jackson and Simone both look at the number below.
9 ones and 5 hundreds
Jackson says that the number is 95 and Simone says it’s written as 509. Who do you agree with? Explain your thinking.
15-20 minutes
A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
Fill in the blanks to describe each of the following numbers in unit form.
a. 379 = ___hundreds ____tens ____ones
379 = ____tens ____ ones
b. 670 =___hundreds ____tens ____ones
670 =____tens ____ones
Circle the number that has 4 hundreds and 13 ones.
Daily Word Problems, Warm Ups, and Center Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.
Next
Read, write, and represent three-digit numbers in standard form, word form, and unit forms.
Topic A: Understanding and Representing Three Digit Numbers
Compose and represent a hundred.
Standards
2.NBT.A.12.NBT.A.1.A
Model and compose three-digit numbers with hundreds, tens, and ones using base ten blocks.
2.NBT.A.12.NBT.A.1.A2.NBT.A.1.B
Represent and compose three digit numbers using hundreds, tens, and ones.
2.NBT.A.1
Model and compose three-digit numbers in situations where there are more than 9 tens and ones.
2.NBT.A.3
Read, write, and represent three-digit numbers using understanding of place value and expanded form.
Read, write, and represent three-digit numbers in all forms.
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Topic B: Reasoning with Numbers to 1000
Use place value understanding to count to 1,000 and reason about three-digit numbers.
2.NBT.A.2
Locate three-digit numbers on a number line.
Skip-count by 5s, 10s, and 100s to find numbers on a number line.
Compare 2 three-digit numbers using a number line.
2.NBT.A.4
Compare 2 three-digit numbers using place value.
Order three-digit numbers using place value knowledge and number lines to explain thinking.
2.NBT.A.22.NBT.A.4
Topic C: Place Value in Action - Money and Word Problems
Understand the value of dimes, nickels, and pennies.
2.MD.C.8
Use counting to find the value of groups of dimes, nickels, and pennies.
2.MD.C.82.NBT.A.2
Understand the value of quarters and find the value of coin collections.
Understand the value of 100 cents and 1 dollar.
Make change from a dollar and make a dollar with coins.
2.MD.C.82.OA.A.1
Solve word problems with money situations.
Solve two-step word problems with money situations.
Solve two-step word problems with add to change unknown and take from change unknown.
2.OA.A.1
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