-1.7999999999999998
4.6
-2.8
You go right to left, subtracting the bottom number from the top number. You start with the 6 and the 8. 8 is larger than 6, so we borrow 1 from the adjacent 4, making it into 16. 16-8 is 8, so our left-most number is eight. We then move on to the 4 and the 2. Since we borrowed 1 from the 4, it is now a 3. 3-2 is 1. We now bring down the decimal point in the same position as it is in the other number, leaving us with 1.8
4.6-2.8=1.8
-46
64 subtracted from 18 = 46
67
28
66?
It is: 28+46 = 74
28 out of 46 is 60.87%
-337
21
28 + 18 = 46
28 * 46 = 1288
28 x 46 = 1,228