2.2 Subtracting up to 6-Digit Numbers
a)
8 - 4 =
b)
4 - 0 =
c)
9 - 7 =
d)
10 - 6 =
e)
7 - 7 =
f)
10 - 3 =
g)
40 - 25 =
h)
125 - 100 =
Subtraction Without Regrouping
6 8
-2 5
→
Step (1) 8 - 5 = 3
→
6 8
-2 5
3
→
Step (2) 6 - 2 = 4
→
6 8
-2 5
4 3
→
The answer is 43. Can you check it by calculator?
1- Subtract the following numbers:
a-
8 3
-
2 2
b-
7 6
-
4 0
c-
8 8 9
-
2 3 4
d-
8 9 3 2 1
-
7 8 3 2 1
e-
5 3 9 7 7
-
1 9 3 2
f-
1 9 6 3 1
-
1 9 1 1 1
17
Subtraction With Regrouping Ones
3 8
- 9
→
Step (1) 8 - 9 = ?
Take (1) ten from the (3) tens
→
(1) ten + 8 ones
→
10 + 8 = 18
Step (2) 18 - 9 = 9
→
2
18
3
8
-
9
2 9
Step (3) Don't forget that we took 1 ten from the 3 tens above, so we got 2.
Check the answer using a calculator!
Check the answer using a calculator!
1- Solve by subtraction:
a-
8 3
-4 6
b-
9 7
-2 9
c-
3 5 5
- 4 6
d-
7 7 4 5
-3 4 2 2
e-
8 3 7 2
-1 3 5 8
f-
7 6 3 2 5 4
-1 5 2 1 2 6
g-
1 9 3 2 9 1
-1 1 1 1 1 7
h-
9 4 7 5 3
-9 4 6 1 4
18
Subtraction with Regrouping Tens and Ones:
3 2 7
-8 9
→
Step (1) Subtracting
ones
→
ones
1
3 2 7+10
- 8 9
8
Step (2) Subtracting
tens
→
tens
2
1+10
3 2 17
- 8 9
8
→
21117
3 2 7
- 8 9
2 3 8
→
Don't forget
subtracting
hundreds.
subtracting
hundreds.
2- Subtract the following:
a-
5
1
6
-3 2 7
b-
7
0
3
-2 8 5
c-
6
1
1
-1 9 9
d-
1 9 6 4
5 5
-1 9 2 2 6 5
e-
7
7 4 9
-4 8 3 4
f-
1 0 9 5
6 1
- 9 3 7 1
g-
2
0
0
0
0
- 5
h-
1
0
0
0
- 4 0 4
i-
2
0
1
0
1
0
- 1 9 1 1 1
19
🔬 Interactive Math Laboratory
Step-by-Step Subtraction Simulator
Simulate regrouping, borrowing across zeros, and columnar subtraction up to 6 digits with visual explanations.
−
−
Step 0 of 0
Ready to start
💡
Active Step Explanation
Welcome! Press Next Step ▶ or Play to see column-by-column subtraction with regrouping demonstrated step-by-step.
📘 Regrouping Rule:
If the top digit is smaller than the bottom digit, borrow 1 ten from the next column to the left.
- The column to the left decreases by 1.
- The current column increases by 10.
- When borrowing across 0, the 0 borrows from the left and becomes 9, and gives 10 to the right.