50
the sum for 20 + 40 + 70 + 80 = 210
The sum of 1/8 and 3/10 is 17/40
the sum of 10 + 10 = 20
The sum of 10 plus 8 is 18.
figure it out.
The sum is 40
The sum of 1/8 and 7/10 is 33/40
254
40
the sum of 80 + 20 + 90 + 10 = 200
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
7/8 + 9/10 Easy in decimal, .875 + .9 = 1.775 35/40 + 36/40 = 71/40 = 1 and 31/40