Probe One Assessment Probe 1 of 5
Double-Digit Addition Checkpoint
Score: _____ / 10 | _____%
Student:
Date:
Time:
Directions: Add the ones first, then tens. Decide if you need to regroup (make a ten). Write your answer below.
Mixed Regrouping
1
T O
38
✓ / ✗
2
T O
42
✓ / ✗
3
T O
56
✓ / ✗
4
T O
24
✓ / ✗
5
T O
47
✓ / ✗
6
T O
61
✓ / ✗
7
T O
35
✓ / ✗
8
T O
52
✓ / ✗
9
T O
19
✓ / ✗
10
T O
73
✓ / ✗
Observation Notes: Carries ten correctly Forgets carried ten Unneeded regrouping Ones first routine
Status: Mastered (8-10) Emerging (<8)
Probe Two Assessment Probe 2 of 5
Double-Digit Addition Checkpoint
Score: _____ / 10 | _____%
Student:
Date:
Time:
Directions: Add the ones first, then tens. Decide if you need to regroup (make a ten). Write your answer below.
Mixed Regrouping
1
T O
34
✓ / ✗
2
T O
48
✓ / ✗
3
T O
51
✓ / ✗
4
T O
29
✓ / ✗
5
T O
63
✓ / ✗
6
T O
37
✓ / ✗
7
T O
22
✓ / ✗
8
T O
56
✓ / ✗
9
T O
45
✓ / ✗
10
T O
18
✓ / ✗
Observation Notes: Carries ten correctly Forgets carried ten Unneeded regrouping Ones first routine
Status: Mastered (8-10) Emerging (<8)
Probe Three Assessment Probe 3 of 5
Double-Digit Addition Checkpoint
Score: _____ / 10 | _____%
Student:
Date:
Time:
Directions: Add the ones first, then tens. Decide if you need to regroup (make a ten). Write your answer below.
Mixed Regrouping
1
T O
45
✓ / ✗
2
T O
26
✓ / ✗
3
T O
39
✓ / ✗
4
T O
53
✓ / ✗
5
T O
28
✓ / ✗
6
T O
41
✓ / ✗
7
T O
64
✓ / ✗
8
T O
32
✓ / ✗
9
T O
17
✓ / ✗
10
T O
74
✓ / ✗
Observation Notes: Carries ten correctly Forgets carried ten Unneeded regrouping Ones first routine
Status: Mastered (8-10) Emerging (<8)
Probe Four Assessment Probe 4 of 5
Double-Digit Addition Checkpoint
Score: _____ / 10 | _____%
Student:
Date:
Time:
Directions: Add the ones first, then tens. Decide if you need to regroup (make a ten). Write your answer below.
Mixed Regrouping
1
T O
43
✓ / ✗
2
T O
36
✓ / ✗
3
T O
25
✓ / ✗
4
T O
57
✓ / ✗
5
T O
64
✓ / ✗
6
T O
49
✓ / ✗
7
T O
31
✓ / ✗
8
T O
28
✓ / ✗
9
T O
52
✓ / ✗
10
T O
16
✓ / ✗
Observation Notes: Carries ten correctly Forgets carried ten Unneeded regrouping Ones first routine
Status: Mastered (8-10) Emerging (<8)
Probe Five Assessment Probe 5 of 5
Double-Digit Addition Checkpoint
Score: _____ / 10 | _____%
Student:
Date:
Time:
Directions: Add the ones first, then tens. Decide if you need to regroup (make a ten). Write your answer below.
Mixed Regrouping
1
T O
54
✓ / ✗
2
T O
36
✓ / ✗
3
T O
27
✓ / ✗
4
T O
44
✓ / ✗
5
T O
38
✓ / ✗
6
T O
62
✓ / ✗
7
T O
46
✓ / ✗
8
T O
21
✓ / ✗
9
T O
15
✓ / ✗
10
T O
73
✓ / ✗
Observation Notes: Carries ten correctly Forgets carried ten Unneeded regrouping Ones first routine
Status: Mastered (8-10) Emerging (<8)
Progress Tracker Teacher Guide Teacher Resource
Progress Monitoring Tracker & Goal Graph
MTSS / RTI / IEP
Skill Focus: Two-Digit Addition With and Without Regrouping (Standard Algorithm)
Student Name:
Grade / Case:
Baseline:
Target Goal: When given a 10-problem probe of two-digit addition (mixing problems with and without regrouping), student will score 8/10 (80%) or higher across 3 consecutive probes .
Assessment Data Log
Probe Date Given Score (/10) Accuracy (%) Goal Met? Key Notes / Interventions Probe 1 ___ / ___ / 20__ _____ / 10 _____% [ ] Yes [ ] No Probe 2 ___ / ___ / 20__ _____ / 10 _____% [ ] Yes [ ] No Probe 3 ___ / ___ / 20__ _____ / 10 _____% [ ] Yes [ ] No Probe 4 ___ / ___ / 20__ _____ / 10 _____% [ ] Yes [ ] No Probe 5 ___ / ___ / 20__ _____ / 10 _____% [ ] Yes [ ] No
Visual Progress Graph
Goal Aimline (80%) Probe Score
10 (100%) 8 (80%) 6 (60%) 4 (40%) 2 (20%) 0 (0%)
Probe 1
Probe 2
Probe 3
Probe 4
Probe 5
Addition Regrouping Diagnostic Checklist
Forgetting Carried Ten: Does the student add the ones column correctly (e.g. 8 + 7 = 15, writes 5), but forget to add the regrouped 1 ten to the tens column?
Unneeded Regrouping: Does the student write a carried 1 ten even when the sum of the ones column is ≤ 9 (e.g. for 42 + 35, adds 1 to tens)?
Single-Digit Fact Fluency: Are calculation errors caused by procedural confusion or basic single-digit addition fact recall within 20?
Answer Key
Probes 1–5 Master Scoring Guide (Two-Digit Addition)
[R] = Regrouping Required
All problems are two-digit addition. Exactly 5 regrouping [R] and 5 non-regrouping problems per probe.
Probe 1 Key
38+27= 65 [R]
