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