A fun math activity for dice. Roll the dice to see what number you are subtracting. Includes thorough explanation of regrouping. Worksheet also included.

1. Subtraction with Regrouping
3rd
Grade Indiana Math Standard 3.2.1

2. 7 2
Name
6 4 8 3 3 1 6 0 4 2
2 5 7 3 8 2 7 5 2 1 9 3
5 0 7 1 4 3 9 1 2 0 5 2
3 3 6 2 9 4 3 2 4 4 7 0
Directions: For each problem, roll two dice.
Write each number you roll in a box then solve.

3. 7 2
3 4
You can’t take
4 from 2
so you must
regroup the 72.

4. 7 2
Let’s just think
about the 72
for a minute.
Remember the
place value
columns.
tens
ones
Put 72 in expanded form: 70 + 2
You can borrow 10 from the 70 and
give it to the 2 and still have 72.
7 0 6 0borrow 10
1 22 give 10
7 27 2
+ +

5. Now let’s
get back to
the original
problem.
7 2
3 4
You can’t take
4 from 2
so you must
regroup the 72.
6
Borrow 1 ten
from the 7.
12
Give the 1 ten to
the 2 to make 12.
Now subtract.
3 8
Let’s read the completed problem:
72 – 34 = 38
Remember
you’re actually
taking
10 from 70

6. 4 5
You can’t take
5 from 4
so you must
regroup the 64.
6
5
Borrow 1 ten
from the 6.
414
Give the 1 ten to
the 4 to make 14.
Now subtract.
1 9
Let’s read the completed problem:
64 – 45 = 19
Remember
you’re actually
taking
10 from 60

7. 313
Give the 1 ten to
the 3 to make 13.
8
7
Borrow 1 ten
from the 8.
2 6
You can’t take
6 from 3
so you must
regroup the 83.
Now subtract.
5 7
Let’s read the completed problem:
83 – 26 = 57
Remember
you’re actually
taking
10 from 80