Word Problem Checkup Worksheet
Grade 3 Math • Progress Monitoring Probe #3 • Addition & Subtraction
Standard: 3.OA.D.8 / 3.NBT.A.2
Word Problem Accuracy Check
Solve each one-step word problem. Show your work, write the equation, and label your answer.
Score
___ / 5
Goal
4 / 5 (80%)
Student:
Date:
Time:
Problem 1 Joining
Maya collected 148 nature stickers in her scrapbook. Her grandfather gave her 85 more stickers. How many stickers does Maya have in all?
Show Your Work:
Eq:
Ans:
Problem 2 Separating
The school library had 324 mystery books. On Friday, students checked out 168 books. How many mystery books remain on the shelves?
Show Your Work:
Eq:
Ans:
Problem 3 Part-Part-Whole
A bakery made 235 blueberry muffins and 178 pumpkin muffins for the festival. How many muffins did the bakery bake altogether?
Show Your Work:
Eq:
Ans:
Problem 4 Comparison
Lucas sprinted 450 meters during track practice. Clara sprinted 275 meters. How many more meters did Lucas sprint than Clara?
Show Your Work:
Eq:
Ans:
Problem 5 Take-From
A workshop started with 500 craft blocks in a bin. Students used 264 of the blocks. How many craft blocks are still left in the bin?
Show Your Work:
Eq:
Ans:
Teacher Diagnostic Matrix RTI / MTSS
P1 (+)
○ / ✗
P2 (-)
○ / ✗
P3 (+)
○ / ✗
P4 (-)
○ / ✗
P5 (-)
○ / ✗
Target Error Analysis
Operation choice (+ vs. -) Regrouping / borrowing error Missing or incorrect label
Tiers: 4-5 (Tier 1) • 3 (Tier 2) • 0-2 (Tier 3)
Next Step:
Mastery: 4/5 (80%) • Standard CCSS 3.OA.D.8 • Addition & Subtraction Word Problems
Form A
Word Problem Checkup Key
Teacher Guide • Answer Key Form A • One-Step Word Problems
Standard: 3.OA.D.8 / 3.NBT.A.2
Word Problem Checkup • Answer Key
Model solutions, standard equations, expected units, and common error patterns for diagnostic analysis.
Point Value
1 pt/problem (5 pts total)
Correct Equation: 0.5 pt (valid operation & setup)
Correct Calculation: 0.5 pt (accurate arithmetic)
Label Requirement: Must specify noun/unit
Problem 1 Solution Joining (+)
Equation: 148 + 85 = 233
Answer: 233 stickers
Model Vertical Algorithm:
¹ ¹
1 4 8
+ 8 5
2 3 3
Watch for: Forgetting regrouped hundred (answering 133 or 223).
Problem 2 Solution Separating (−)
Equation: 324 − 168 = 156
Answer: 156 mystery books
Model Vertical Algorithm:
² ¹¹ ¹⁴
3 2 4
− 1 6 8
1 5 6
Watch for: Reversing digits (8−4=4, 6−2=4 → 244).
Problem 3 Solution Part-Part-Whole (+)
Equation: 235 + 178 = 413
Answer: 413 muffins
Model Vertical Algorithm:
¹ ¹
2 3 5
+ 1 7 8
4 1 3
Watch for: Regrouping once only (e.g. 5+8=13, but omitting 3+7+1 → 313).
Problem 4 Solution Comparison (−)
Equation: 450 − 275 = 175
Answer: 175 meters
Model Vertical Algorithm:
³ ¹⁴ ¹⁰
4 5 0
− 2 7 5
1 7 5
Watch for: Adding instead due to "more" keyword (450+275=725).
Problem 5 Solution Take-From (−)
Equation: 500 − 264 = 236
Answer: 236 craft blocks
Model Vertical Algorithm:
⁴ ⁹ ¹⁰
5 0 0
− 2 6 4
2 3 6
Watch for: Forgetting middle zero becomes 9 tens (answering 344 or 336).
Intervention Action Matrix Action Plan
Tier 1: Mastered (4–5 pts) Student demonstrates solid schema identification & regrouping. Advance to 2-step word problems.
Tier 2: Targeted Support (3 pts) Isolate error type: if conceptual, use bar models / tape diagrams; if computational, use base-ten blocks.
Tier 3: Intensive Intervention (≤ 2 pts) Reduce number magnitude to 2 digits. Explicit instruction on situation schemas (Change, Combine, Compare).
Pro-Tip: Discourage relying solely on keywords (e.g. "more" in Problem 4). Teach students to visualize the story action.
Grading Key • Grade 3 Mathematics • Word Problem Accuracy Check (Form A)
Teacher Reference • Confidential
