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Decimal Subtraction - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

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Complexity=1, Mode=1

Subtract.
1.  
1
- 0.7
2.  
3.3
- 1.5

Complexity=10, Mode=1

Subtract.
1.  
5
- 1.9
2.  
8.1
- 6.9

Complexity=5, Mode=2

Subtract.
1.  
7.23
- 4.71
2.  
3.9
- 1.09

Complexity=15, Mode=2

Subtract.
1.  
9.07
- 1.62
2.  
9.17
- 3.52

Complexity=20, Mode=3

Subtract.
1.  
26.372
- 5.686
2.  
15.84
- 3.854

Complexity=100, Mode=4

Subtract.
1.  
92.6361
- 77.2867
2.  
83.2768
- 26.9372

Complexity=200, Mode=5

Subtract.
1.  
304.38481
- 130.34629
2.  
260.17726
- 88.29480

Complexity=500, Mode=6

Subtract.
1.  
631.259493
- 460.698820
2.  
219.349456
- 110.216529

Answers

Complexity=1, Mode=1

Subtract.
#Correct AnswerYour Answer
1
1
- 0.7
Solution
First, align the decimal points.
Then, add zeroes to make it easier to subtract.
  1.0
 -0.7
  0.3
#Correct AnswerYour Answer
2
3.3
- 1.5

Complexity=10, Mode=1

Subtract.
#Correct AnswerYour Answer
1
5
- 1.9
Solution
First, align the decimal points.
Then, add zeroes to make it easier to subtract.
  5.0
 -1.9
  3.1
#Correct AnswerYour Answer
2
8.1
- 6.9

Complexity=5, Mode=2

Subtract.
#Correct AnswerYour Answer
1
7.23
- 4.71
#Correct AnswerYour Answer
2
3.9
- 1.09
Solution
First, align the decimal points.
Then, add zeroes to make it easier to subtract.
  3.90
 -1.09
  2.81

Complexity=15, Mode=2

Subtract.
#Correct AnswerYour Answer
1
9.07
- 1.62
#Correct AnswerYour Answer
2
9.17
- 3.52

Complexity=20, Mode=3

Subtract.
#Correct AnswerYour Answer
1
26.372
- 5.686
#Correct AnswerYour Answer
2
15.84
- 3.854
Solution
First, align the decimal points.
Then, add zeroes to make it easier to subtract.
 15.840
 -3.854
 11.986

Complexity=100, Mode=4

Subtract.
#Correct AnswerYour Answer
1
92.6361
- 77.2867
#Correct AnswerYour Answer
2
83.2768
- 26.9372

Complexity=200, Mode=5

Subtract.
#Correct AnswerYour Answer
1
304.38481
- 130.34629
#Correct AnswerYour Answer
2
260.17726
- 88.29480

Complexity=500, Mode=6

Subtract.
#Correct AnswerYour Answer
1
631.259493
- 460.698820
#Correct AnswerYour Answer
2
219.349456
- 110.216529
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