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Subtraction

Counting back, borrowing, close differences and compensation

The Subtraction unit belongs to the Arithmetic and mental math section of Math Mental and has 13 lessons: counting back, borrowing, close differences and compensation.

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Sample questions

In the lesson, numbers change every session and the solution appears after you answer.

Lessons in this unit

  1. Subtraction up to 10 Lesson, 8 questions
  2. Up to 20 without borrowing Lesson, 8 questions
  3. Up to 20 with borrowing Lesson, 8 questions
  4. Counting back Lesson, 8 questions
  5. Practice: subtraction facts Practice, 10 questions
  6. Tens − ones Lesson, 8 questions
  7. Tens − ones with borrowing Lesson, 8 questions
  8. Two two-digit numbers Lesson, 8 questions
  9. Two two-digit numbers with borrowing Lesson, 10 questions
  10. Close differences Lesson, 8 questions
  11. Review: addition and subtraction Practice, 12 questions
  12. Compensation: 83 − 29 Lesson, 8 questions
  13. Unit test 12 questions

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