Regrouping Rally Worksheet
2nd Grade Math • Place Value & Regrouping
Name: Date:
Regrouping Rally
Master addition bundles and subtraction trades step by step!
Rule: Always check the sign (+ or −) first!
Part 1
The Regrouping Playbook (Study the Steps)
Addition: Bundle a Ten 10 Ones = 1 Ten
TO
1
38
+25
63
1
Add Ones: 8 + 5 = 13. Write 3 in ones, carry 1 ten up.
2
Add Tens: 1 + 3 + 2 = 6 tens.
Answer: 63
Subtraction: Trade a Ten 1 Ten → 10 Ones
TO
4 12
5 2
−18
34
1
Check Ones: 2 − 8 (Need more!). Trade 1 ten for 10 ones.
2
Subtract: 12 − 8 = 4 ones, and 4 − 1 = 3 tens.
Answer: 34
Part 2
Guided Warm-Up (Use the Helpful Clues)
Write in the regrouping boxes at the top!
1 Addition 6 + 7 = 13
TO
46
+27
Guided Clue:
Add 6 + 7 = 13. Write 3 below the ones line. Write the 1 ten in the dashed box above the 4!
Then add all three tens: 1 + 4 + 2 = ____
2 Subtraction Trade 1 Ten
TO
74
−38
Guided Clue:
Can you take 8 from 4? No! Cross out 7 to make 6 tens. Turn 4 into 14 ones.
Now subtract: 14 − 8 = ____ and 6 − 3 = ____
3 Addition 9 + 5 = 14
TO
59
+25
Guided Clue:
9 + 5 = 14. Write 4 in the ones spot. Send 1 ten up to the box.
Finish up: 1 + 5 + 2 = ____
4 Subtraction Trade 1 Ten
TO
83
−47
Guided Clue:
Can you do 3 − 7? No! Trade 1 ten from 8 (becomes 7). Add 10 to 3 (becomes 13).
Subtract: 13 − 7 = ____ and 7 − 4 = ____
Warm-Up Complete? Flip over to the Mixed Challenge on Page 2! Page 1 of 2
Independent Practice Arena
Name: Score: ____ / 10
Mixed Operation Challenge
Look closely at the sign! Some are addition (+), and some are subtraction (−).
Step 1: Circle every + and − sign!
Part 3
Solve Each Problem (Show Your Regrouping)
- + ADD
TO
37
+45
- − SUB
TO
65
−28
- − SUB
TO
82
−46
- + ADD
TO
48
+36
- + ADD
TO
56
+29
- − SUB
TO
91
−54
- − SUB
TO
70
−35
- + ADD
TO
67
+18
Part 4
Word Problem Detectives (Read • Decide • Solve)
13 The Shell Collector Clue: "in all"
Maya found 48 sea shells on Saturday. On Sunday, she found 27 more sea shells. How many sea shells did Maya find in all?
TO
Circle one: + or −
Final Answer: shells
14 The Bakery Bake-Off Clue: "how many left"
The school chef baked 73 fresh muffins. The hungry students ate 46 muffins at lunch. How many muffins are left?
TO
Circle one: + or −
Final Answer: muffins
My Regrouping Champion Checklist:
I checked each + and − sign I bundled 10 ones into 1 ten (+) I traded 1 ten for 10 ones (−)
Teacher Stamp
RALLY STAR!
