Adding and subtracting decimals worksheet - Free Printable

I'll solve each decimal addition and subtraction problem step by step.

Problem 1: 45.6 + 33.75
- Align decimals: 45.60 + 33.75
- Add: 0+5=5, 6+7=13 (write 3, carry 1), 5+3+1=9, 4+3=7
- Answer: 79.35

Problem 2: 43 + 5.89
- Align decimals: 43.00 + 5.89
- Add: 0+9=9, 0+8=8, 3+5=8, 4+0=4
- Answer: 48.89

Problem 3: 53.74 - 23.182
- Align decimals: 53.740 - 23.182
- Subtract: 0-2 (borrow) = 8, 3-8 (borrow) = 5, 6-1=5, 3-3=0, 5-2=3
- Answer: 30.558

Problem 4: 24 + 9.623
- Align decimals: 24.000 + 9.623
- Add: 0+3=3, 0+2=2, 0+6=6, 4+9=13 (write 3, carry 1), 2+0+1=3
- Answer: 33.623

Problem 5: 38 - 30.7
- Align decimals: 38.0 - 30.7
- Subtract: 0-7 (borrow) = 3, 7-0=7, 3-3=0
- Answer: 7.3

Problem 6: 89 + 59.6
- Align decimals: 89.0 + 59.6
- Add: 0+6=6, 9+9=18 (write 8, carry 1), 8+5+1=14
- Answer: 148.6

Problem 7: 55 - 53.132
- Align decimals: 55.000 - 53.132
- Subtract: 0-2 (borrow) = 8, 9-3=6, 9-1=8, 4-3=1, 5-5=0
- Answer: 1.868

Problem 8: 18 + 5.6
- Align decimals: 18.0 + 5.6
- Add: 0+6=6, 8+5=13 (write 3, carry 1), 1+0+1=2
- Answer: 23.6

Problem 9: 69.94 + 63.525
- Align decimals: 69.940 + 63.525
- Add: 0+5=5, 4+2=6, 9+5=14 (write 4, carry 1), 9+3+1=13 (write 3, carry 1), 6+6+1=13
- Answer: 133.465

Problem 10: 92 + 19.25
- Align decimals: 92.00 + 19.25
- Add: 0+5=5, 0+2=2, 2+9=11 (write 1, carry 1), 9+1+1=11
- Answer: 111.25

Problem 11: 50.55 - 1.294
- Align decimals: 50.550 - 1.294
- Subtract: 0-4 (borrow) = 6, 4-9 (borrow) = 5, 4-2=2, 0-1 (borrow) = 9, 4-0=4
- Answer: 49.256

Problem 12: 6 + 3.2
- Align decimals: 6.0 + 3.2
- Add: 0+2=2, 6+3=9
- Answer: 9.2

Problem 13: 90 - 82.11
- Align decimals: 90.00 - 82.11
- Subtract: 0-1 (borrow) = 9, 9-1=8, 9-2=7, 8-8=0
- Answer: 7.89

Problem 14: 9 - 7.8
- Align decimals: 9.0 - 7.8
- Subtract: 0-8 (borrow) = 2, 8-7=1
- Answer: 1.2

Problem 15: 44.6 - 11.463
- Align decimals: 44.600 - 11.463
- Subtract: 0-3 (borrow) = 7, 9-6=3, 5-4=1, 4-1=3, 4-1=3
- Answer: 33.137

Final Answer:
1) 79.35
2) 48.89
3) 30.558
4) 33.623
5) 7.3
6) 148.6
7) 1.868
8) 23.6
9) 133.465
10) 111.25
11) 49.256
12) 9.2
13) 7.89
14) 1.2
15) 33.137