Counting and place value

Students review the value of digits in three-digit numbers and represent numbers using hundreds, tens, and ones.

3.NBT.A.1: Use place value understanding to generate estimates for problems in real-world situations, with whole numbers within 1,0...

Students use number lines and place value understanding to round whole numbers to the nearest ten and hundred.

3.NBT.A.1: Use place value understanding to generate estimates for problems in real-world situations, with whole numbers within 1,0...

Students use benchmark numbers such as 100, 250, 500, and 750 to estimate quantities and check the reasonableness of answers.

3.NBT.A.1: Use place value understanding to generate estimates for problems in real-world situations, with whole numbers within 1,0...

Students select compatible numbers to make mental estimation of sums and differences within 1,000 easier and more efficient.

3.NBT.A.1: Use place value understanding to generate estimates for problems in real-world situations, with whole numbers within 1,0...

Students decompose addends by place value and use expanded form to add three-digit numbers.

3.NBT.A.2: Flexibly and efficiently add and subtract within 1,000 using strategies based on place value, properties of operations, ...

Students subtract three-digit numbers by decomposing by place value, including regrouping across hundreds and tens.

3.NBT.A.2: Flexibly and efficiently add and subtract within 1,000 using strategies based on place value, properties of operations, ...

Students compare multiple strategies for adding and subtracting within 1,000 and select the most efficient method for a given problem.

3.NBT.A.2: Flexibly and efficiently add and subtract within 1,000 using strategies based on place value, properties of operations, ...

Students apply place value strategies to solve real-world addition and subtraction problems within 1,000.

3.NBT.A.2: Flexibly and efficiently add and subtract within 1,000 using strategies based on place value, properties of operations, ...