Subtraction of Two-Digit Numbers without Regrouping

An example of subtraction with two digit numbers without regrouping is 67 - 23. We will give and explain two different methods for this and, as always, you can choose to use whichever method is most comfortable for you.

Method 1: This method has 4 steps.
1. For 67 – 23, split both numbers into tens and ones digits.
67 = 6 tens + 7 ones
67 = 60 + 7
23 = 2 tens + 3 ones
23 = 20 + 3
2. Subtract the second ten from the first ten.
60 - 20 = 40
3. Subtract the second one from the first.
7 - 3 = 4
4. Now combine the tens and ones digits to get the answer, called the difference.
40 + 4 = 44

Try these practice problems using method 1.
Practice 1:
56 - 32
Split the subtrahend and minuend: 56 = 50 + (6) / 32 = (30) + (2)
Subtract second ten from the first: 50 – (30) = (20)
Subtract the second one from the first: (6) – (2) = (4)
Combine: (20) + (4) = (24)

Practice 2:
78 - 54
78 = (70) + (8) / 54 = (50) + (4)
70 – (50) = (20)
(8) – (4) = (4)
(20) + (4) = (24)

Method 2: This method has 3 steps.
Reminder: The number that is subtracted FROM is the MINUEND. The number that is being subtracted is the SUBTRAHEND. The result is known as the DIFFERENCE.
1. For 67 – 23, split the subtrahend into the tens and ones digits.
23 = 2 tens + 3 ones
23 = 20 + 3
2. First, subtract the tens digit from the minuend.
67 – 20 = 47
3. From that result, subtract the ones digit.
47 – 3 = 44

Practice these problems using method 2.
Practice 1:
86 – 45
Split the subtrahend: 45 = 40 + (5)
Subtract tens from the minuend: 86 – (40) = (46)
Subtract ones from the result: (46) – (5) = (41)

Practice 2:
78 – 54
54 = (50) + (4)
78 – (50) = (28)
(28) – (4) = (24)

Solve these mentally using either method.
1. 75 – 33
2. 98 – 12
3. 69 – 24
4. 54 – 41
5. 47 – 23
6. 36 – 14
7. 89 – 27
8. 23 – 12
9. 74 – 63
10. 37 – 22
11. 66 – 43
12. 48 – 27