Chapter 2 – Numbers to 1,000

Essential Question: How can you use place value to model, write, and compare 3-digit numbers?

Grade 2 Common Core State Standards

CC.2.1.2.B.1 Use place-value concepts to represent amounts of tens and ones and to compare three digit numbers.

CC.2.1.2.B.2 Use place-value concepts to read, write, and skip count to 1,000.

CC.2.1.2.B.3 Use place-value understanding and properties of operations to add and subtract within 1,000.

CC.2.2.2.A.1Represent and solve problems involving addition and subtraction within 100

Objectives

-The students will understand that each group of 10 tens is equivalent to 1 hundred.

-The students will write 3-digit numbers that are represented by groups of tens.

-The students will use concrete and pictorial models to represent 3-digit numbers.

-The students will apply place value concepts to write 3-digit numbers that are represented by pictorial models.

-The students will use place value to describe the values of digits in numbers to 1,000.

-The students will read and write 3-digit numbers in word form.

-The students will write 3-digit numbers in expanded form and in standard form.

-The students will apply place value concepts to find equivalent representations of numbers.

-The students will identify 10 more, 10 less, 100 more, or 100 less than a given number.

-The students will extend number patterns by counting on by tens or hundreds.

-The students will solve problems involving number comparisons by using the strategy make a model.

-The student will compare 3-digit numbers using the >, =, and < symbols.

Vocabulary Terms

Compare- to describe whether numbers are equal to, less than, or greater than one another

Digits- the symbols used in a numeration systems; the ten digits used in our base-ten numeration system are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9

Hundred- a quantity that is equivalent to 10 tens

Is greater than (>)- a symbol used to compare two numbers when the first number has the greater value

Is less than (<)- a symbol used to compare two numbers when the first number has the lesser value

Is equal to (=)- a symbol used to compare two numbers having the same value

Ten- the value of a digit in the tens position/ 10 ones equal 1 ten

Thousand- a quantity that is equivalent to 10 hundreds

Helpful Tips

Have your child look through magazines for 3-digit numbers and cut them out. Work together to write a word problem using two of these numbers. Have your child solve the problem.

Example:

John collected 136 leaves. Julie collected 281 leaves. Who collected the greater number of leaves?

136 < 281 Julie collected the greater number of leaves.