Add
7ab,-4ab,-ab
Fill in the blanks and name the property used.
7×-4=____×7
7. Fill in the blanks :
(v) Total number of diameters of a circle is ______ .
Fill in the blanks with appropriate digits.
8 _ 4 5 _
- 6 7 _ _ 8
Fill in the blanks:
0+-47=.............