[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:00.52,Default,,0000,0000,0000,,
Dialogue: 0,0:00:00.52,0:00:02.84,Default,,0000,0000,0000,,Janelle is training\Nfor a road race.
Dialogue: 0,0:00:02.84,0:00:06.09,Default,,0000,0000,0000,,Her pedometer tracks how\Nfar she runs every day.
Dialogue: 0,0:00:06.09,0:00:08.35,Default,,0000,0000,0000,,Here are the pedometer readings\Nfor the past four
Dialogue: 0,0:00:08.35,0:00:13.19,Default,,0000,0000,0000,,days: on Saturday, she went\N3.89 miles; Sunday, 5.1;
Dialogue: 0,0:00:13.19,0:00:18.19,Default,,0000,0000,0000,,Monday, 10.21; Tuesday, 3.35.
Dialogue: 0,0:00:18.19,0:00:21.75,Default,,0000,0000,0000,,Estimate the total distance she\Nran over the four days,
Dialogue: 0,0:00:21.75,0:00:23.64,Default,,0000,0000,0000,,and then calculate\Nthe exact amount.
Dialogue: 0,0:00:23.64,0:00:26.46,Default,,0000,0000,0000,,Let's estimate first. So I'm\Njust going to round them to
Dialogue: 0,0:00:26.46,0:00:27.38,Default,,0000,0000,0000,,the nearest mile.
Dialogue: 0,0:00:27.38,0:00:30.19,Default,,0000,0000,0000,,So 3.89, let's round\Nit up to 4 miles.
Dialogue: 0,0:00:30.19,0:00:32.60,Default,,0000,0000,0000,,And I'm doing that because in\Nthe tenths place, we have an
Dialogue: 0,0:00:32.60,0:00:34.73,Default,,0000,0000,0000,,8, which is 5 or greater.
Dialogue: 0,0:00:34.73,0:00:38.37,Default,,0000,0000,0000,,So let's just make that\Nroughly 4 miles.
Dialogue: 0,0:00:38.37,0:00:39.77,Default,,0000,0000,0000,,Let's make this 5.1.
Dialogue: 0,0:00:39.77,0:00:43.04,Default,,0000,0000,0000,,We round that down because\Nthis 1 is less than 5.
Dialogue: 0,0:00:43.04,0:00:45.35,Default,,0000,0000,0000,,So let's make this 5 miles.
Dialogue: 0,0:00:45.35,0:00:50.96,Default,,0000,0000,0000,,10.21, let's make that\N10 miles because
Dialogue: 0,0:00:50.96,0:00:51.95,Default,,0000,0000,0000,,2 would round down.
Dialogue: 0,0:00:51.95,0:00:53.48,Default,,0000,0000,0000,,It's less than 5.
Dialogue: 0,0:00:53.48,0:00:57.47,Default,,0000,0000,0000,,And 3.35, let's make that 3\Nmiles, because 3 is less than
Dialogue: 0,0:00:57.47,0:00:58.74,Default,,0000,0000,0000,,5, so we'd round down.
Dialogue: 0,0:00:58.74,0:01:00.61,Default,,0000,0000,0000,,So that is 3 miles.
Dialogue: 0,0:01:00.61,0:01:04.09,Default,,0000,0000,0000,,And if we were to add them\Nup, 4 plus 5 is 9.
Dialogue: 0,0:01:04.09,0:01:07.11,Default,,0000,0000,0000,,9 plus 10 is 19.
Dialogue: 0,0:01:07.11,0:01:11.04,Default,,0000,0000,0000,,19 plus 3 is 22.
Dialogue: 0,0:01:11.04,0:01:20.04,Default,,0000,0000,0000,,So my estimate is that she ran\N22 miles over the four days.
Dialogue: 0,0:01:20.04,0:01:21.08,Default,,0000,0000,0000,,That's my estimate.
Dialogue: 0,0:01:21.08,0:01:24.20,Default,,0000,0000,0000,,Now let's figure out the exact\Namount that she ran.
Dialogue: 0,0:01:24.20,0:01:25.67,Default,,0000,0000,0000,,Let me scroll down\Na little bit.
Dialogue: 0,0:01:25.67,0:01:32.94,Default,,0000,0000,0000,,So we're going to have to add\N3.89 to 5.1-- and remember,
Dialogue: 0,0:01:32.94,0:01:34.87,Default,,0000,0000,0000,,when you're adding decimals,\Nyou want to line up the
Dialogue: 0,0:01:34.87,0:01:44.39,Default,,0000,0000,0000,,decimal-- 10.21 and\Nthen finally 3.35.
Dialogue: 0,0:01:44.39,0:01:47.90,Default,,0000,0000,0000,,And let's add all of these up.
Dialogue: 0,0:01:47.90,0:01:52.50,Default,,0000,0000,0000,,Now we'll start in the\Nhundredths place.
Dialogue: 0,0:01:52.50,0:01:56.82,Default,,0000,0000,0000,,There's nothing here, so 9 plus\Nnothing plus 1 is 10,
Dialogue: 0,0:01:56.82,0:01:59.34,Default,,0000,0000,0000,,plus 5 is 15.
Dialogue: 0,0:01:59.34,0:02:04.91,Default,,0000,0000,0000,,So let's write the 5, and then\Ncarry, or regroup, the 1.
Dialogue: 0,0:02:04.91,0:02:06.36,Default,,0000,0000,0000,,Let me do this in\Nanother color.
Dialogue: 0,0:02:06.36,0:02:10.03,Default,,0000,0000,0000,,1 plus 8 is 9.
Dialogue: 0,0:02:10.03,0:02:12.09,Default,,0000,0000,0000,,9 plus 1 is 10.
Dialogue: 0,0:02:12.09,0:02:14.19,Default,,0000,0000,0000,,10 plus 2 is 12.
Dialogue: 0,0:02:14.19,0:02:17.24,Default,,0000,0000,0000,,12 plus 3 is 15.
Dialogue: 0,0:02:17.24,0:02:18.75,Default,,0000,0000,0000,,Put the 5 down.
Dialogue: 0,0:02:18.75,0:02:21.04,Default,,0000,0000,0000,,Carry, or regroup, the 1.
Dialogue: 0,0:02:21.04,0:02:22.81,Default,,0000,0000,0000,,1 plus 3 is 4.
Dialogue: 0,0:02:22.81,0:02:25.14,Default,,0000,0000,0000,,4 plus 5 is 9.
Dialogue: 0,0:02:25.14,0:02:26.79,Default,,0000,0000,0000,,9 plus 0 is still 9.
Dialogue: 0,0:02:26.79,0:02:33.48,Default,,0000,0000,0000,,9 plus 3 is 12.
Dialogue: 0,0:02:33.48,0:02:33.96,Default,,0000,0000,0000,,Write the 2.
Dialogue: 0,0:02:33.96,0:02:35.80,Default,,0000,0000,0000,,Regroup this 1 right here.
Dialogue: 0,0:02:35.80,0:02:38.53,Default,,0000,0000,0000,,I'll do it out here just so it's\Nnot part of any of these
Dialogue: 0,0:02:38.53,0:02:42.34,Default,,0000,0000,0000,,numbers, and then\N1 plus 1 is 2.
Dialogue: 0,0:02:42.34,0:02:43.77,Default,,0000,0000,0000,,And then we have to remember\Nthe decimal
Dialogue: 0,0:02:43.77,0:02:46.01,Default,,0000,0000,0000,,sitting right over there.
Dialogue: 0,0:02:46.01,0:02:52.76,Default,,0000,0000,0000,,So the exact distance she\Nran was 22.55 miles.
Dialogue: 0,0:02:52.76,0:02:54.16,Default,,0000,0000,0000,,So our estimate wasn't\Ntoo bad.
Dialogue: 0,0:02:54.16,0:02:55.63,Default,,0000,0000,0000,,It was 22 miles.
Dialogue: 0,0:02:55.63,0:02:58.76,Default,,0000,0000,0000,,We got reasonably close, within\Nabout little over a
Dialogue: 0,0:02:58.76,0:03:00.31,Default,,0000,0000,0000,,half a mile.
Dialogue: 0,0:03:00.31,0:03:00.80,Default,,0000,0000,0000,,