Regrouping Frontier Worksheet
IEP Skill Builder Target Goal: 8 / 10 Accurate
Regrouping Frontier Worksheet
Solve 4-digit subtraction equations using the standard US algorithm. Show all borrowing.
Name:
Date:
Steps to Borrow: 1. Start in Ones • 2. Need more? Borrow 1 from left • 3. Cross out & add 10 • 4. Subtract & repeat
1 Borrow Tens → Ones
Th H T O
6 7 4 2
− 2 3 1 8
[ ] Borrowed correctly [ ] Subtracted all places
2 Double Borrowing
Th H T O
5 4 2 7
− 1 8 6 3
[ ] Borrowed correctly [ ] Subtracted all places
3 Continuous Borrowing
Th H T O
7 2 3 5
− 3 5 6 8
[ ] Borrowed correctly [ ] Subtracted all places
4 Borrow Across Zero (Tens)
Th H T O
8 4 0 5
− 2 1 6 8
[ ] Borrowed correctly [ ] Subtracted all places
5 Regrouping Thousands & Ones
Th H T O
6 1 8 4
− 2 7 5 9
[ ] Borrowed correctly [ ] Subtracted all places
Algorithm Reminder: Example
ThHTO
(4)(11)(13)(11)
5241
−1684
3557
• 1 − 4? Borrow 1 ten → 11 − 4 = 7
• 3 − 8? Borrow 1 hundred → 13 − 8 = 5
• 1 − 6? Borrow 1 thousand → 11 − 6 = 5
Page 1 of 2 • Problems 1–5 Turn page for Problems 6–10 & Goal Tracker →
Part 2
Independent Regrouping & Goal Assessment
Student:
6 Across Double Zeros
Th H T O
7 0 0 3
− 3 4 2 8
[ ] Borrowed correctly [ ] Subtracted all places
7 Multiple Regrouping
Th H T O
9 3 5 2
− 4 6 8 7
[ ] Borrowed correctly [ ] Subtracted all places
8 Regrouping Tens & Hundreds
Th H T O
4 5 1 6
− 1 8 4 2
[ ] Borrowed correctly [ ] Subtracted all places
9 Borrow Across Zero (Hundreds)
Th H T O
5 0 7 4
− 2 6 3 8
[ ] Borrowed correctly [ ] Subtracted all places
10 Comprehensive Challenge
Th H T O
8 1 4 3
− 3 7 8 9
[ ] Borrowed correctly [ ] Subtracted all places
IEP Goal Progress Tracker
Goal: 8 / 10
Check (✓) each correct equation:
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
Total Score: _____ / 10
Accuracy: _____%
Goal Met: 8, 9, or 10 correct (≥80%)
Developing: 6 or 7 correct (needs guided practice)
Intervention Needed: 5 or fewer correct
Evaluator: __________________ Date: __________
Page 2 of 2 • Problems 6–10 & IEP Mastery Tracker Standard US Algorithm • 4-Digit Regrouping
