[" simplety the follocurg "],[21-12-:3times2]

21-12-:3xx2

Simplify: 21-12-:3times2

Solve: 21.3times10

State true of false. If the statements are correct, then state the property used. 12 times (11+21)=(12 times 11)+(12 times 21)

Find out the two signs to be interchanged to make the following equation correct. 21 + 5 xx 2 - 21 div 3 = 12

Find the mean deviation from the median for the following data : 9, 12, 18, 3, 5, 3, 10, 12, 21, 12, 21.

Find the mean deviation from median for the following data : 9,12,18,3,5,3,10,12,21,12,21