00:02
Okay, problem 61.
00:04
Now we do problem 61.
00:08
First, let's see a.
00:17
A we have 87 .6 plus 9 .888 and plus 2 .3 plus 0 .07 .7.
00:38
And now if you notice, we have 2 .888 and plus 2 .3.
00:38
$ .7.
00:40
And now if you notice, we have two numbers that only one.
00:46
That is 87 .6 and 2 .3.
00:51
So after you have addition, you do addition to all of them, and the result, the sum should pick only one decimal number, the least one, okay? so let's see how we got here.
01:14
87 .6, 9 .888, 2 .3, 0 .07 .07 .07.
01:24
So we have this one.
01:27
Okay.
01:44
So we have 100 -100 -558.
01:50
But because we get only one number after this anymore, so we have only one here.
01:55
And we can round up this number 2 .1006.
02:01
Okay? b.
02:06
43 .7 minus 2 .341...