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## Numbers in Base Ten Unit

PROGRESSIVE MATHEMATICS INITIATIVE® (PMI®)

This section links together the PMI units that cover the Common Core Domain NBT (Numbers in Base Ten). It also lists the sections in each unit, along with the Common Core Standards covered.

Calendar Math – First Grade
• Calendar 1.NBT.1
• Days of the Week 1.NBT.1
• Number of Days of School 1.NBT.1
• Weather 1.NBT.1
• Number of the Day 1.NBT.1
• Beat the Clock 1.NBT.1

Numbers to 120 – First Grade
• What is a Number? 1.NBT.1
• Number Writing 0-4 - 1.NBT.1
• Number Writing 5-9 -1.NBT.1
• Tricky Teens 1.NBT.2B
• Number Line 1.NBT.1
• Number Grid1.NBT.1
• One More, One Less 1.NBT.1
• Comparing Numbers 1.NBT.3
• Using Symbols to Compare Numbers 1.NBT.3
• Skip Counting by 10 1.NBT.5

Place Value – First Grade
• What is a Digit? 1.NBT.1
• Base Ten Blocks 1.NBT.2A
• Ones 1.NBT.1
• Tens 1.NBT.2A
• Tens and Ones 1.NBT.2B&C
• Tens and Ones Expanded 1.NBT.2
• Trading Tens and Ones 1.NBT.2A
• Comparing Numbers to 9 - 1.NBT.3
• Comparing Numbers up to 99 - 1.NBT.3
• Comparing with Symbols 1.NBT.3

2 Digit Addition – First Grade
• Adding Ten in Our Heads 1.NBT.5
• Adding Ten on a Number Grid 1.NBT.5
• Patterns When Adding Ten 1.NBT.5
• Adding Multiples of Ten on a Number Grid 1.NBT.5
• Adding Multiples of Ten in Our Heads 1.NBT.5
• Two Digit Plus One Digit 1.NBT.4
• Two Digit Plus Two Digit 1.NBT.4
• Introduction to Regrouping 1.NBT.4
• Regrouping Without Blocks 1.NBT.4
• More Regrouping 1.NBT.4

2 Digit Subtraction – First Grade
• Subtracting Ten in Our Heads 1.NBT.5
• Subtracting Ten from Multiples of Ten on a Number Grid 1.NBT.5
• Patterns When Subtracting 10 from Multiples of 10 - 1.NBT.5
• Subtracting Ten on a Number Grid 1.NBT.5
• Patterns when Subtracting Ten 1.NBT.5
• Subtracting Ten Word Problems 1.NBT.5
• Two Digit Minus One Digit 1.NBT.4
• Two Digit Minus Two Digit 1.NBT.4
• Word Problems with Addition and Subtraction 1.NBT.4

Place Value – Second Grade
• Place Value of Numbers 2.NBT.1
• Expanded Forms 2.NBT.2
• Hundreds 2.NBT.1
• Skip Counting 2.NBT.2
• Thousands 2.NBT.3
• Comparing Numbers 2.NBT.4
• Ordering Numbers 2.NBT.4

Facts – Second Grade
• Addition Facts 2.NBT.9
• Making Tens 2.NBT.10
• Adding 3 Numbers 2.NBT.11
• Subtracting 2.NBT.12
• Adding and Subtracting Zeros 2.NBT.13
• Fact Families 2.NBT.14
• Double Facts 2.NBT.15
• Doubles Plus 1 2.NBT.16
• Doubles Minus 1 - 2.NBT.17
• Number Stories 2.NBT.18

2 Digit Addition and Subtraction – Second Grade
• Addition 2.NBT.5 & 2.NBT.6
• Subtraction 2.NBT.5, 2.NBT.6 & 2.NBT.7
• Mixed Practice 2.NBT.5, 2.NBT.6, 2.NBT.7 & 2.NBT.8

Data – Second Grade
• Add within 1000 - 2.NBT.7
• Subtract within 1000 - 2.NBT.7

Place Value – Third Grade
• Place Value
• Standard, Numeric and Expanded Forms 3.NBT.1
• Comparing Numbers 3.NBT.1
• Ordering Numbers 3.NBT.1
• Rounding Numbers 3.NBT.1
• Addition 3.NBT.1
• Subtraction 3.NBT.2
• Estimate Sums 3.NBT.2
• Add 2 Digit Numbers 3.NBT.2
• Add 3 Digit Numbers 3.NBT.2
• Estimate Differences 3.NBT.1
• 2-Digit Subtraction 3.NBT.2
• 3-Digit Subtraction 3.NBT.2
• Subtraction Across Zeros 3.NBT.2
• Checking Subtraction with Addition 2.NBT.2

Number Sense and Algebraic Concepts – Fourth Grade
• Read and Represent Multi-Digit Numbers 4.NBT.1 & 4.NBT.2
• Compare Numbers 4.NBT.1
• Order Numbers 4.NBT.1
• Round Numbers 4.NBT.3

Multiplication and Division of Multi-Digit Numbers – Fourth Grade
• Multiply by Multiples of 10, 100 and 1000 - 4.NBT.1
• Multiplication Review 4.NBT.5
• Multiply Two Digit Numbers 4.NBT.5
• Multiply a Whole Number by Up to 4 Digits by 1 Digit 4.NBT.5
• Division with and Without Remainders 4.NBT.6
• Find Whole Number Quotients and Remainders with up to Four-Digit Dividends and One-Digit Divisors 4.NBT.6
• Quotients with Zeros 4.NBT.6

Addition and Subtraction Computation – Fourth Grade
• Vocabulary 4.NBT.4
• Multi-Digit Addition with and without Regrouping 4.NBT.4
• Multi-Digit Subtraction with and without Regrouping 4.NBT.4
• Subtraction Across Zeros 4.NBT.
• Properties and Inverse Operations of Addition and Subtraction 4.NBT.4

Decimal Concepts – Fifth Grade
• Define and Review Vocabulary 5.NBT.1
• Identify Place Values 5.NBT.1
• Read and Write Decimals 5.NBT.3
• Compare and Order Decimals 5.NBT.3
• Round Numbers to Designated Place Values 5.NBT.4

Decimal Computation – Fifth Grade
• Decimal Addition 5.NBT.7
• Decimal Subtraction 5.NBT.7
• Multiplication of Multi-Digit Numbers 5.NBT.5
• Decimal Multiplication 5.NBT.7
• Mixed Word Problems 5.NBT.

Division – Fifth Grade
• Divisibility Rules 5.NBT.6
• Patterns in Multiplication and Division 5.NBT.2
• Division of Whole Numbers 5.NBT.6
• Division of Decimals 5.NBT.7