Answer: 1536

1. 7 − 1 = 6
2. 0 is less than 7: regroup 1 ten from the next column → 10 − 7 = 3
3. 6 − 1 = 5
4. 6 − 5 = 1

Answer: 2904

1. 2 is less than 8: regroup 1 ten from the next column → 12 − 8 = 4
2. 3 − 3 = 0
3. 4 is less than 5: regroup 1 ten from the next column → 14 − 5 = 9
4. 3 − 1 = 2

Answer: 5144

1. 8 − 4 = 4
2. 5 − 1 = 4
3. 1 − 0 = 1
4. 9 − 4 = 5

Answer: 696

1. 6 − 0 = 6
2. 7 is less than 8: regroup 1 ten from the next column → 17 − 8 = 9
3. 3 is less than 7: regroup 1 ten from the next column → 13 − 7 = 6
4. 4 − 4 = 0

Answer: 420

1. 0 − 0 = 0
2. 5 − 3 = 2
3. 3 is less than 9: regroup 1 ten from the next column → 13 − 9 = 4
4. 1 − 1 = 0

Answer: 7081

1. 2 − 1 = 1
2. 9 − 1 = 8
3. 0 − 0 = 0
4. 9 − 2 = 7

Answer: 1042

1. 0 is less than 8: regroup 1 ten from the next column → 10 − 8 = 2
2. 4 − 0 = 4
3. 4 − 4 = 0
4. 4 − 3 = 1

Answer: 6896

1. 4 is less than 8: regroup 1 ten from the next column → 14 − 8 = 6
2. 1 is less than 2: regroup 1 ten from the next column → 11 − 2 = 9
3. 3 is less than 5: regroup 1 ten from the next column → 13 − 5 = 8
4. 8 − 2 = 6

Answer: 1008

1. 9 − 1 = 8
2. 3 − 3 = 0
3. 4 − 4 = 0
4. 4 − 3 = 1

Answer: 799

1. 5 is less than 6: regroup 1 ten from the next column → 15 − 6 = 9
2. 6 is less than 7: regroup 1 ten from the next column → 16 − 7 = 9
3. 2 is less than 5: regroup 1 ten from the next column → 12 − 5 = 7
4. 1 − 1 = 0

Answer: 3634

1. 9 − 5 = 4
2. 9 − 6 = 3
3. 8 − 2 = 6
4. 8 − 5 = 3

Answer: 2500

1. 1 − 1 = 0
2. 7 − 7 = 0
3. 5 − 0 = 5
4. 4 − 2 = 2

Answer: 5355

1. 3 is less than 8: regroup 1 ten from the next column → 13 − 8 = 5
2. 4 is less than 9: regroup 1 ten from the next column → 14 − 9 = 5
3. 5 − 2 = 3
4. 6 − 1 = 5

Answer: 2022

1. 2 − 0 = 2
2. 7 − 5 = 2
3. 8 − 8 = 0
4. 6 − 4 = 2

Answer: 6295

1. 7 − 2 = 5
2. 5 is less than 6: regroup 1 ten from the next column → 15 − 6 = 9
3. 2 − 0 = 2
4. 9 − 3 = 6

Answer: 611

1. 3 − 2 = 1
2. 8 − 7 = 1
3. 7 − 1 = 6
4. 3 − 3 = 0