Three-Digit Addition and Subtraction Worksheets

About this resource

Three-digit addition and subtraction is where a child has to trade across two column boundaries, not just add or

subtract straight down. This is a full kit for that step: build the value with flats, rods and cubes, walk one

addition problem and one subtraction problem through the regroup, then practice both operations across five shared

formats — a stack with hundreds, tens and ones, a story problem, a cut-and-glue match and a color page — plus the

record-keeping around them. Every page has a big "My name" line, one short instruction and answer boxes a child can

write in.

EVERYTHING INSIDE (36 pages)

• 20 student pages: 17 practice pages across 5 formats (each format in both addition and subtraction), plus a

flats-rods-cubes chart and two "How to" walkthrough pages

• 33 addition problems and 33 subtraction problems (66 in total), no two alike within an operation, EVERY problem

regroups at least once (checked in code): addition answers run 230–987, subtraction answers run 118–888

• 18 numbers to build from flats, rods and cubes
• 12 cut-and-glue pieces (2 pages, 6 a page) and 16 shapes to solve and color (2 pages, 8 a page)
• 3 answer keys, made from the same data as the pages
• 1 tracker (17 pages, 84 items), 1 class progress grid
• 1 team note and 1 home page (addition and subtraction practice boxes and a worked example for a family to try)
• 1 filled example (an invented student), 1 phrase and strategy bank (17 starters), 1 binder cover and 6 divider

tabs with a spine label to cut out

• Start Here, a how-to-read-a-page page, and a "what's next" back page

THE FIVE FORMATS (addition and subtraction each)

1. Count the Value (3 pages, shared, 18 numbers): count the drawn flats, rods and cubes and write the number; the

last set also writes it as hundreds, tens and ones.

2. Add and Regroup / Subtract and Regroup (3 pages each, 30 problems): a vertical stack in hundreds, tens and ones

columns. The first two sets have column headings, the last has none.

3. Story Problems (2 pages each, 8 problems): a short story with a drawn object and a "Show your work" box.

4. Cut and Glue (1 page each, 12 pieces): match each problem to its answer, then glue.

5. Add / Subtract and Color (1 page each, 16 shapes): solve the problem in each of 8 shapes, then color it by a

color-coded range of the answer's hundreds digit.

Dots at the top right of each page (not words) show the level: one dot starting, two building, three ready for

more.

Regroups, On Purpose

Every problem in the file needs at least one trade: the ones digits add to 10 or more (or subtract short), or the

tens digits do once the ones are traded. That is checked in code for every problem before it is used anywhere in

the file, and every block picture is checked too: the flats drawn equal the hundreds digit, the rods equal the tens

digit, the cubes equal the ones digit.

Built For The Child Holding The Page

A big "My name" line, one short instruction with a picture, large rounded numbers and boxes at least half an inch

tall. Nothing on a student page is written for an adult. The flats, rods, cubes and counting pictures are all drawn

by us; there are no scores and no timers on the student pages.

Type In, Or Print

The name and date lines, the answer boxes, the tracker, the class grid, the team note and the home page are type-in

fields in any PDF reader. Every page also prints cleanly in black and white. This is a fillable PDF; it is not a

Google Slides or PowerPoint file.

Who This Is For

Second and third grade classrooms, self-contained and resource rooms, and any teacher working with an older student

who still needs the trade shown with blocks before moving to numbers alone. The home page sends the same job to a

family; the team note hands off what changed since the last meeting.

What This Is, And What It Is Not

Three-digit addition and subtraction practice, with regrouping, and the record-keeping around it. It is not a

probe, a goal bank or a score sheet, and it makes no claim about any student's age or rate of progress.