Well if u got 4 marks out of 7, that means u did only 3 wrong. So it's an average marks.
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Turnaround facts in addition are numbers or parts that can be switched with the answer staying the same. For example 3+4=7 4+3=7 In subtraction the total stays the same in the beginning of the equation and the parts are switched. For example 7-3=4 7-4=3 Good luck
It is 7/4 or 7 over 4
7+7+7+4-3 = 22 7+7+7+4-3 = 22 7+7+7+4-3 = 22 7+7+7+4-3 = 22
7 + (7*3) - 4 = 7 + 21 - 4 = 28 - 4 = 24
7 + 7 + (4 + 4 + 4)/4 = 17