1 00:00:00,000 --> 00:00:00,610 2 00:00:00,610 --> 00:00:08,849 What is the place value of 3 in 654.213? 3 00:00:08,849 --> 00:00:10,199 So let's think about that a little bit. 4 00:00:10,199 --> 00:00:13,109 And to do that, let me rewrite the number, and I'll write 5 00:00:13,109 --> 00:00:14,619 each digit in a different color. 6 00:00:14,619 --> 00:00:31,759 So we have 654 point-- we get the decimal point-- 213. 7 00:00:31,760 --> 00:00:34,609 Now we're pretty familiar, I think, with what goes on to 8 00:00:34,609 --> 00:00:35,920 the left of the decimal point. 9 00:00:35,920 --> 00:00:38,670 We know that this right here-- let me do this in a neutral 10 00:00:38,670 --> 00:00:45,590 color-- is the hundreds place, or we could view that as 10 to 11 00:00:45,590 --> 00:00:47,730 the second. 12 00:00:47,729 --> 00:00:50,619 Let me write that a little bit bigger down here. 13 00:00:50,619 --> 00:00:55,589 So this right here that is the hundreds place, or you could 14 00:00:55,590 --> 00:00:57,800 view that as the 10 to the second's place, which is the 15 00:00:57,799 --> 00:00:59,349 same thing as hundred. 16 00:00:59,350 --> 00:01:03,100 This right here is the tens place, which is the same thing 17 00:01:03,100 --> 00:01:08,030 as 10 to the first. This right here is the ones place, which 18 00:01:08,030 --> 00:01:11,189 is the same thing as 10 to the zero. 19 00:01:11,189 --> 00:01:15,439 Then if you go one place to the right of the decimal 20 00:01:15,439 --> 00:01:18,200 point, this represents tenths. 21 00:01:18,200 --> 00:01:25,909 This represents tenths, or we could view it as 10 to the 22 00:01:25,909 --> 00:01:27,170 negative one. 23 00:01:27,170 --> 00:01:29,219 Then, if we go to this magenta, if we go two places 24 00:01:29,219 --> 00:01:35,670 to the right, this represents hundredths, or 10 to the 25 00:01:35,670 --> 00:01:36,500 negative two. 26 00:01:36,500 --> 00:01:41,060 And then finally, this 3 represents thousandths. 27 00:01:41,060 --> 00:01:45,870 This represents thousandths, or 10 to the negative three. 28 00:01:45,870 --> 00:01:48,780 Now, just to answer the question what is the place 29 00:01:48,780 --> 00:01:53,969 value of 3 in 654.213? 30 00:01:53,969 --> 00:01:55,519 The place value is thousandths. 31 00:01:55,519 --> 00:01:59,030 32 00:01:59,030 --> 00:02:01,010 That would essentially answer their question. 33 00:02:01,010 --> 00:02:03,650 But to make sure that we really understand what this 34 00:02:03,650 --> 00:02:05,810 means, I'm going to rewrite this number. 35 00:02:05,810 --> 00:02:09,840 We can rewrite this number as 600. 36 00:02:09,840 --> 00:02:16,800 We have 6 hundreds plus 5 tens, or you could say plus 50 37 00:02:16,800 --> 00:02:48,629 plus 4 ones plus 2/10, plus 1/100, plus 3/1,000. 38 00:02:48,629 --> 00:02:51,379 Or we could write this, just to really make sure we 39 00:02:51,379 --> 00:02:53,960 understand what we're talking about when we mean place 40 00:02:53,960 --> 00:03:02,170 value, we can rewrite this number as 6 times 100, plus 5 41 00:03:02,169 --> 00:03:10,019 times 10, plus 4 times 1-- I keep doing that in the wrong 42 00:03:10,020 --> 00:03:28,189 color-- plus 2 times 1/10, plus 1 times 1/100, and then 43 00:03:28,189 --> 00:03:33,939 finally, plus 3 times 1/1,000. 44 00:03:33,939 --> 00:03:36,539 So hopefully, when you write it out like this, it gives you 45 00:03:36,539 --> 00:03:39,629 a sense of what it means we say place value. 46 00:03:39,629 --> 00:03:44,349 The 6, three digits to the left of the decimal, is in the 47 00:03:44,349 --> 00:03:47,109 hundreds place, so it represents 6 hundreds. 48 00:03:47,110 --> 00:03:50,190 This represents 5 tens because it's in the tens place. 49 00:03:50,189 --> 00:03:51,819 This represents 4 ones. 50 00:03:51,819 --> 00:03:54,639 You go to the thousandths place, this 3 literally 51 00:03:54,639 --> 00:03:56,685 represents three one-thousandths. 52 00:03:56,686 --> 00:03:59,867