The sum of the angle measures of a quadrilateral is 360° Write and
85
115
60

The third angle would be 100 degrees
Explanation: 360-85-115-60= 100

Im not that good with division but i think 5 is -6but dont quote me on thatim not the best in division but thats my answer

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post