Subtract the following and verify your answers by suitable addition.
9876-7856
9876-78562020 Check 7856+20209876
Hence, subtraction of 9876-7856 is 2020 and verified by suitable addition.
Perform the following subtractions. Check your answers by the corresponding additions.
8940-1094
400000-79876
42786-40589
21357-11257
Looking at the following addition facts, form as many subtraction facts as you can:
99=39+69
Use a number strip to verify your answer.