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Inverse operation

Inverse operation. Shows: That addition is the inverse of subtraction. 2. Helps you check your answers. 3. How to solve simple ‘missing number’ problems. 127+62=189 Ex: 189-127 = 62 168+756=924 230+410=64 136+319=455. 560+140=700 835+25=860 228+135=363 876+32=908.

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Inverse operation

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  1. Inverse operation Shows: • That addition is the inverse of subtraction. 2. Helps you check your answers. 3. How to solve simple ‘missing number’ problems.

  2. 127+62=189 Ex: 189-127 = 62 168+756=924 230+410=64 136+319=455 560+140=700 835+25=860 228+135=363 876+32=908 Can you turn these addition number sentences into subtractions? Can you make a different subtraction?

  3. You can use this method to check your answers. 90+30= 120 Check your answer by turning it into a subtraction: or 120-30= 120-90= 30

  4. +62=189 168+ =924 230 + =64 +319=455 560+ =700 +25=860 +135=363 876+ =908 How can you guess missing numbers?

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