Regrouping Rescue Worksheet Math Lab Grade 3 Number Sense
Regrouping Rescue | Three-Digit Subtraction
Name:
Date:
3-Digit Regrouping Strategy Guide: Hundreds, Tens & Ones
"More on the floor? Go next door!"
1 Check Ones
If top ones < bottom ones, borrow 1 ten from tens. 10 ones are added!
2 Check Tens
If top tens < bottom tens, borrow 1 hundred from hundreds. 10 tens added!
3 Record Boxes
Slash original digits and write new values in the top H, T, and O boxes.
4 Subtract Right
Subtract right to left: ones first, then tens, then hundreds.
A
Step-by-Step 3-Digit Missions
Follow each checkpoint prompt to complete the problem.
H T O
543
- 228
Problem 1: 543 − 228
Can we do ones 3 − 8 ? (Yes / No)
Borrow 1 ten from 4 tens: 4 − 1 = ___
Add 10 ones: 3 + 10 = ___
Subtract ones: 13 − 8 = ___
Subtract tens & hundreds: 3−2=___, 5−2=___
H T O
725
- 364
Problem 2: 725 − 364
Subtract ones: 5 − 4 = ___ (No borrow!)
Can we do tens 2 − 6 ? (Yes / No)
Borrow 1 hundred: 7 − 1 = ___ hundreds
Add 10 tens: 2 + 10 = ___ tens
Subtract tens & hundreds: 12−6=___, 6−3=___
B
Scaffolded 3-Digit Zone
Check each place value! Write new numbers in the H, T, and O boxes.
#3 H T O
652
- 327
#4 H T O
836
- 452
#5 H T O
541
- 275
#6 H T O
704
- 238
Pro Tip: Work column by column starting on the right. Never borrow from hundreds until you reach the tens column!
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Regrouping Rescue | 3-Digit Practice Arena
Name:
Page 2
C
Three-Digit Regrouping Drills
Show your regrouping slashes & write new values in the H, T, O dashed boxes!
#7 H T O
643
- 219
#8 H T O
852
- 381
#9 H T O
735
- 268
#10 H T O
914
- 458
#11 H T O
520
- 247
#12 H T O
864
- 327
#13 H T O
751
- 486
#14 H T O
630
- 275
#15 H T O
842
- 519
#16 H T O
927
- 384
#17 H T O
615
- 248
#18 H T O
703
- 356
#19 H T O
836
- 469
#20 H T O
554
- 287
#21 H T O
940
- 563
#22 H T O
762
- 395
My 3-Digit Checklist:
Checked ones first Regrouped tens or hundreds Subtracted all 3 columns
How did I do?
Borrowing Quest Worksheet Math Quest Level 2 Practice
Borrowing Quest | Three-Digit Subtraction
Name:
Date:
The Explorer's 3-Digit Regrouping Trail
"Trade 1 for 10 Next Door!"
1 Ones Check
Need more ones? Trade 1 ten for 10 ones. Write new values in T and O boxes.
2 Tens Check
Need more tens? Trade 1 hundred for 10 tens. Write new values in H and T boxes.
3 Slash Original
Slash old digits cleanly so you only subtract the updated numbers.
4 Solve Leftward
Subtract the ones column, then tens column, then hundreds column.
A
Guided Explorer Missions
Follow each checkpoint prompt to solve the 3-digit subtraction.
H T O
654
- 329
Problem 1: 654 − 329
Can we do ones 4 − 9 ? (Yes / No)
Borrow 1 ten from 5 tens: 5 − 1 = ___
Add 10 ones: 4 + 10 = ___
Subtract ones: 14 − 9 = ___
Subtract tens & hundreds: 4−2=___, 6−3=___
H T O
837
- 472
Problem 2: 837 − 472
Subtract ones: 7 − 2 = ___ (No borrow!)
Can we do tens 3 − 7 ? (Yes / No)
Borrow 1 hundred: 8 − 1 = ___ hundreds
Add 10 tens: 3 + 10 = ___ tens
Subtract tens & hundreds: 13−7=___, 7−4=___
B
Explorer Skill Zone
Check each place value! Write new values in H, T, and O boxes.
#3 H T O
742
- 218
#4 H T O
925
- 461
#5 H T O
634
- 278
#6 H T O
805
- 347
Quest Tip: When regrouping across zero (like 805), borrow from hundreds to make 10 tens, then borrow 1 ten to make 15 ones!
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Borrowing Quest | 3-Digit Practice Arena
Name:
Page 2
C
Quest Subtraction Arena (3 Digits)
Show your slashes & write new hundreds, tens, and ones in the dashed boxes above!
#7 H T O
Subtraction Sprint Worksheet Math Sprint Level 3 Practice
Subtraction Sprint | Three-Digit Regrouping
Name:
Date:
Coach's 3-Digit Regrouping Playbook
"Race Through Each Column!"
1 Ones Lane
Check ones column first. If top < bottom, borrow 1 ten to make 10 ones!
2 Tens Lane
Check tens column next. If top < bottom, borrow 1 hundred to make 10 tens!
3 Top Boxes
Slash original numbers and write updated digits in the top H, T, O boxes.
4 Finish Line
Subtract right to left: ones, tens, then hundreds to cross the finish line!
A
Guided Sprint Warmups
Follow each checkpoint prompt to complete the 3-digit sprint drill.
H T O
563
- 247
Problem 1: 563 − 247
Can we do ones 3 − 7 ? (Yes / No)
Borrow 1 ten from 6 tens: 6 − 1 = ___
Add 10 ones: 3 + 10 = ___
Subtract ones: 13 − 7 = ___
Subtract tens & hundreds: 5−4=___, 5−2=___
H T O
718
- 354
Problem 2: 718 − 354
Subtract ones: 8 − 4 = ___ (No borrow!)
Can we do tens 1 − 5 ? (Yes / No)
Borrow 1 hundred: 7 − 1 = ___ hundreds
Add 10 tens: 1 + 10 = ___ tens
Subtract tens & hundreds: 11−5=___, 6−3=___
B
Sprint Drills Zone
Check ones, tens, and hundreds! Write new numbers in the top boxes.
#3 H T O
851
- 426
#4 H T O
647
- 283
#5 H T O
723
- 368
#6 H T O
902
- 456
Coach's Golden Rule: When regrouping twice (double borrow), always complete ones first, then regroup tens!
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Subtraction Sprint | 3-Digit Championship Arena
Name:
Page 2
C
Championship 3-Digit Drills
Show your slashes & write new hundreds, tens, and ones in the dashed boxes above!
#7 H T O
864
