1 00:00:01,370 --> 00:00:04,342 Write 7/8 ths as a decimal. 2 00:00:04,342 --> 00:00:08,045 The main realisation here is 7 / 8 3 00:00:08,045 --> 00:00:17,111 is the same thing as 7 ÷ 8. 4 00:00:17,142 --> 00:00:21,516 These are all the same way or different ways of writing the same thing. 5 00:00:21,516 --> 00:00:26,540 So lets actually divide 8 into 7. I will do it down here. 6 00:00:26,540 --> 00:00:30,334 I am going to divide 8 into 7. And I am going 7 00:00:30,334 --> 00:00:34,112 to add a decimal point here just because we know that this value is going to be less than one. 8 00:00:34,112 --> 00:00:35,683 7 / 8 is less than 1. 9 00:00:35,714 --> 00:00:41,608 We are going to have some digits beyond or to the right of the decimal point. 10 00:00:41,608 --> 00:00:45,556 And let me put the decimal point right up here, right above the decimal point in 7. 11 00:00:45,556 --> 00:00:46,820 And then we start dividing. 12 00:00:46,820 --> 00:00:49,382 And now this really turns into a long division problem 13 00:00:49,382 --> 00:00:53,162 and we just have to make sure that we keep track of the decimal sign. 14 00:00:53,193 --> 00:00:58,866 So 8 does not go into 7 at all, but it does go into 70. 15 00:00:58,866 --> 00:01:07,539 So 8 goes into 70 8 times. 16 00:01:07,539 --> 00:01:14,550 8X8 =64. And then you subtract. 70 - 64 = 6 17 00:01:14,550 --> 00:01:17,854 And then bring down another zero because we still have a remainder. 18 00:01:17,869 --> 00:01:19,816 We want to get to a point that we have no remainders, 19 00:01:19,831 --> 00:01:24,166 assuming that this thing doesn't repeat forever and then there's other ways we can deal with that. 20 00:01:24,166 --> 00:01:33,916 8 goes into 60 7 times 21 00:01:33,947 --> 00:01:40,008 7 X 8 = 56. And then we subtract again. 22 00:01:40,008 --> 00:01:46,104 60-56 = 4, now we can bring down another zero right over here. 23 00:01:46,135 --> 00:01:52,454 8 goes into 40 exactly 5 times. 5 X 8 = 40 24 00:01:52,454 --> 00:01:56,546 We have nothing left over. 25 00:01:56,546 --> 00:02:04,336 And so we are done. 7 ÷ 8 or 7/8 = .875 26 00:02:04,398 --> 00:02:09,661 But I'll put a leading zero here just so it makes it clear that this is where the decimal is. 27 00:02:09,661 --> 99:59:59,999 0.875. And we are done.