Curriculum Library

Numbers in Base 10 Unit 7: Use Place Value and Properties to Add and Subtract

Key Concept: When adding or subtracting numbers like place values are combined and sometimes it is necessary to regroup a quantity.

Lesson Sequences

T.7-1-5 Use Base Ten Blocks to Add and Regroup to 500  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to add quantities to 500 with regrouping. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-1-6 Use Base Ten Blocks to Add and Regroup Two Times to 500  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to add quantities to 500 with regrouping in multiple place values.  (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-1-7 Use Base Ten Blocks to Subtract and Regroup to 500  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to subtract quantities within 500 with regrouping. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-1-8 Use Base Ten Blocks to Subtract and Regroup Two Times to 500  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to subtract quantities within 500 with regrouping in multiple place values.  (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-1-9 Use Base Ten Blocks to Add/Subtract/Regroup Within 1000  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to add and subtract quantities within 1000 with regrouping. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-1-10 Use Base Ten Blocks to Add/Subtract/Regroup Two Times Within 1000  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students use Base 10 blocks to add and subtract quantities within 1000 with regrouping in multiple place values. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
Key Concept: Commutativity, associativity, unitizing, and decomposition are strategies for adding and subtracting.

Lesson Sequences

T.7-2-6 Use an Open Number Line to Add and Subtract Within 500  |
Lesson Plan
View Teacher-Facilitated Lesson Students use an open number line to add and subtract quantities to 500 with regrouping.  (35-45 min)
T.7-2-7 Relate Addition and Subtraction on an Open Number Line to 500  |
Lesson Plan
View Teacher-Facilitated Lesson Students relate addition and subtraction on an open number line with quantities within 500. (35-45 min)
T.7-2-8 Use an Open Number Line to Add and Subtract Within 1000  |
Lesson Plan
View Teacher-Facilitated Lesson Students use an open number line to add and subtract quantities within 1000 with regrouping. (35-45 min)
T.7-2-9 Relate Addition and Subtraction on an Open Number Line to 1000  |
Lesson Plan
View Teacher-Facilitated Lesson Students relate addition and subtraction within 1000 using an open number line. (35-45 min)
Key Concept: When adding or subtracting numbers like place values are combined.

Lesson Sequences

T.7-3-1 Add and Subtract Multiples of 10  |
Lesson Plan
View Lesson Opener Discover & Discuss (5-10 min)
View Guided Lesson Students add and subtract multiples of ten using Base 10 blocks and a number chart. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
T.7-3-2 Add and Subtract Multiples of 100  |
Lesson Plan
View Lesson Opener Discover & Discuss (5-10 min)
View Guided Lesson Students apply their understanding of adding and subtracting multiples of ten in order to add and subtract multiples of hundreds. (12-20 min)
View Lesson Closer Connect-It (5-8 min)
T.7-3-3 Add and Subtract Multiples of 10 and 100  |
Lesson Plan
View Lesson Opener Discover & Discuss (5-10 min)
View Guided Lesson Students continue to build their understanding of adding and subtracting units. (12-20 min)
View Lesson Closer Connect-It (5-8 min)
T.7-3-4 Mentally Add and Subtract Units of Tens or Hundreds  |
Lesson Plan
View Teacher-Facilitated Lesson Students extend their understanding of adding and subtracting place value units in order to mentally add and subtract units. (35-45 min)