Place Value Builders Worksheet
Math Builders 3-Digit Addition & Subtraction (No Regrouping)
Place Value Builders Worksheet
Name:
Date:
Base-Ten Key:
Flat = 100
Rod = 10
Unit = 1
Add or subtract Ones, then Tens, then Hundreds.
1 Part 1: Manipulative Visual Models (Problems 1–2)
Count the base-ten models, write in the grid, and solve.
Problem 1 Add (+)
234:
+ 143:
Problem 2 Subtract (-)
Cross out 214 from 456:
✕
✕
✕
2 Part 2: Place-Value Column Practice (Problems 3–8)
Check the sign (+ or -) and solve in columns.
Problem 3 + Add
Problem 4 - Subtract
Problem 5 + Add
Problem 6 - Subtract
Problem 7 + Add
Problem 8 - Subtract
3 Part 3: Word Problems (Problems 9–10)
Align the numbers in the place-value frame and solve.
Problem 9: Seashell Collection In All
Maya collected 351 seashells on Saturday and 246 seashells on Sunday. How many seashells did she collect in all?
Final Answer:
shells
Problem 10: Library Books Left Over
The school library had 678 storybooks. Students checked out 435 books for reading week. How many books are left on the shelf?
Final Answer:
books
Place Value Check: Start at the Ones place, move to Tens, then Hundreds. All problems require NO regrouping! Total: 10 Problems
Blueprint Architect Activity Sheet
Math Lab Activity Mission: Site Architect
Blueprint Architect Activity Sheet
Name:
Date:
📐 Architect Mission: Draft base-ten models, pave the place-value path, and inspect blueprints for alignment errors!
□ = 100 | | = 10 | · = 1
1 Task 1: Drafting Board — Quick-Draw Models
Draw squares (□) for Hundreds, sticks (|) for Tens, and dots (•) for Ones.
Plan A: Addition Draft 312 + 245
Sketch the base-ten pieces for both addends below:
Total Sum:
H:
T:
O:
Plan B: Subtraction Draft 674 - 341
Sketch 674, then cross out (✕) 341 to find what remains:
Difference Left:
H:
T:
O:
2 Task 2: Place-Value Pathway Maze
Solve each tile. Color only the stepping stones with answers GREATER than 500 to reach the site!
🚩 START: Workshop Check the Ones, Tens, Hundreds → shade if answer > 500 🏗️ FINISH: Build Site
Stone A + Add
214 + 352
=
> 500?
Stone B - Sub
876 - 425
=
> 500?
Stone C + Add
403 + 271
=
> 500?
Stone D - Sub
958 - 326
=
> 500?
Stone E - Sub
742 - 531
=
> 500?
Stone F + Add
135 + 462
=
> 500?
3 Task 3: Site Inspector — Spot & Fix the Mistake!
A rookie builder made an error on each blueprint. Find it, circle it, and fix it!
Inspection A: 425 + 52 Alignment Check
Rookie's Work
<table class="w-20 mx-auto text-xs font-mono font-bold text-slate-700"><tbody><tr><td class="text-slate-400"></td><td>4</td><td>2</td><td>5</td></tr><tr class="border-b-2 border-slate-700"><td>+</td><td class="text-rose-600 underline font-black">5</td><td class="text-rose-600 underline font-black">2</td><td></td></tr><tr class="font-black text-rose-800"><td></td><td>9</td><td>4</td><td>5</td></tr></tbody></table>
Column shifted!
Correct Blueprint:
<table class="w-20 mx-auto text-xs font-mono font-bold text-slate-700"><tbody><tr><td class="text-slate-400"></td><td>7</td><td>8</td><td>5</td></tr><tr class="border-b-2 border-slate-700"><td>-</td><td>2</td><td>4</td><td>3</td></tr><tr class="font-black text-rose-800"><td></td><td>5</td><td>4</td><td class="text-rose-600 underline font-black">8</td></tr></tbody></table>
Builder Bot Coloring Page
Color by Code 3-Digit Addition & Subtraction
Builder Bot Coloring Page
Name:
Date:
Step 1: Solve the equations to reveal each color code! All problems require NO regrouping
Yellow
324 + 253
=
Sky Blue
869 - 425
=
Orange
512 + 264
=
Green
687 - 351
=
Red
431 + 158
=
Gray
975 - 742
=
577 444 776 589 589 776 233 233 577 444 PLACE VALUE OK 589 336 233 336 444 233 233 577 776
Builder Checklist: [ ] 1. Solve all 6 equations [ ] 2. Match each number to its color [ ] 3. Color Builder Bot!
No Regrouping Master ⭐