Let me solve each subtraction problem step by step.
Problem 1: 15 - 12
- 5 - 2 = 3 (ones place)
- 1 - 1 = 0 (tens place)
- Answer: 3
Problem 2: 24 - 13
- 4 - 3 = 1 (ones place)
- 2 - 1 = 1 (tens place)
- Answer: 11
Problem 3: 35 - 21
- 5 - 1 = 4 (ones place)
- 3 - 2 = 1 (tens place)
- Answer: 14
Problem 4: 45 - 33
- 5 - 3 = 2 (ones place)
- 4 - 3 = 1 (tens place)
- Answer: 12
Problem 5: 68 - 52
- 8 - 2 = 6 (ones place)
- 6 - 5 = 1 (tens place)
- Answer: 16
Problem 6: 99 - 81
- 9 - 1 = 8 (ones place)
- 9 - 8 = 1 (tens place)
- Answer: 18
Problem 7: 67 - 43
- 7 - 3 = 4 (ones place)
- 6 - 4 = 2 (tens place)
- Answer: 24
Problem 8: 84 - 61
- 4 - 1 = 3 (ones place)
- 8 - 6 = 2 (tens place)
- Answer: 23
Problem 9: 39 - 18
- 9 - 8 = 1 (ones place)
- 3 - 1 = 2 (tens place)
- Answer: 21
Problem 10: 46 - 20
- 6 - 0 = 6 (ones place)
- 4 - 2 = 2 (tens place)
- Answer: 26
Problem 11: 90 - 30
- 0 - 0 = 0 (ones place)
- 9 - 3 = 6 (tens place)
- Answer: 60
Problem 12: 74 - 64
- 4 - 4 = 0 (ones place)
- 7 - 6 = 1 (tens place)
- Answer: 10
Problem 13: 37 - 22
- 7 - 2 = 5 (ones place)
- 3 - 2 = 1 (tens place)
- Answer: 15
Problem 14: 57 - 17
- 7 - 7 = 0 (ones place)
- 5 - 1 = 4 (tens place)
- Answer: 40
Problem 15: 45 - 11
- 5 - 1 = 4 (ones place)
- 4 - 1 = 3 (tens place)
- Answer: 34
Final Answer:
1) 3
2) 11
3) 14
4) 12
5) 16
6) 18
7) 24
8) 23
9) 21
10) 26
11) 60
12) 10
13) 15
14) 40
15) 34
Parent Tip: Review the logic above to help your child master the concept of double subtraction worksheet.