Grade 2 · Math · Unit
Adding and Subtracting Within 1,000
5 lessonsabout 3 weeks
The unit ends with three more days: a review day, a day for your own unit check, and a day to act on what the check showed.
Unit 5 of 9 in the Grade 2 Math Scope and Sequence
What's included in this unit
- 5 lessons in teaching order, each with its objective and a teacher note
- 10 practice pages to print, with an easier and a harder page where available
- 1 classroom tools for the projector
- 4 activities and pages that children do on a screen
- 3 check-up pages to collect
The whole unit in one file
Print every page of the unit at once, with the teacher guide first. The guide has one page per lesson: the objective, what to hand out, and the teacher note.
The unit file, the teacher guide, and saved pages are included with the Teacher plan.
Your PDF is built in your browser, so it always has the newest version of every page.
Lessons
Lesson 1
Add with blocks
Children add two groups of hundreds, tens, and ones blocks and write the total.
- StandardCommon Core 2.NBT.B.7Number and Operations in Base Ten
2 class days
- Day 1Teach: Practice on paper (Core page)
- Day 2Practice: More pages from the maker · Practice on screen
Practice on paper
Add the Blocks
Practice on screen
Lesson 2
Add three-digit numbers and make a new ten or hundred
Children add two three-digit numbers in columns when the ones make a new ten or the tens make a new hundred, and write the small 1 they carry above the next place.
- StandardCommon Core 2.NBT.B.7Number and Operations in Base Ten
3 class days
- Day 1Teach: The Exchange Machine · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
- Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.
Warm up and teach
Practice on paper
3-Digit Addition with Carrying
Practice on screen
3-Digit Addition with Carrying (a page that checks the answers)
Lesson 3
Subtract with blocks
Children take one group of blocks away from another and write how many are left.
- StandardCommon Core 2.NBT.B.7Number and Operations in Base Ten
- StandardCommon Core 2.NBT.B.5Number and Operations in Base Ten
2 class days
- Day 1Teach: The Exchange Machine · Practice on paper (Core page)
- Day 2Practice: More pages from the maker · Practice on screen
Warm up and teach
Practice on paper
Take Away the Blocks
Practice on screen
Lesson 4
Subtract three-digit numbers with regrouping
Children subtract within 1,000 in columns when a ten or a hundred must be regrouped (432 − 151), and check each answer by adding.
- StandardCommon Core 2.NBT.B.7Number and Operations in Base Ten
2 class days
- Day 1Teach: The Exchange Machine · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Check-up page
Warm up and teach
Practice on paper
Subtract Three-Digit Numbers with Regrouping
Lesson 5
Subtract across zeros
Children subtract in columns from a multiple of 100, such as 500 − 231, by trading one hundred for ten tens and then one ten for ten ones.
- StandardCommon Core 2.NBT.B.7Number and Operations in Base Ten
3 class days
- Day 1Teach: The Exchange Machine · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page) · Practice on screen · Check-up page
- Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.
Warm up and teach
Practice on paper
Subtracting Across Zeros
