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# Place Value Review

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## Ian Davey

on 12 December 2012

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#### Transcript of Place Value Review

Place Value 1 2 3 4 5 6 7 8 9 0 For the last five years, we have been learning how digits fit inside numbers. We know that only nine things can fit in the one's place before it gets filled. And when it does get full, ten ones can bundle together to become one group of ten ones. Ten yellow blocks = one ten stack And we know what happens when we
bundle together ten ones but... What do we get when we
bundle together ten tens? A) one set of one thousand
B) one set of one hundred
C) two sets of ten
D) two sets of one hundred Just like the ones place, the ten's place can only hold nine bundles of ten before it gets full. Ten groups of ten = one set of one hundred
(one set of one hundred = one hundred ones) Now that we've reviewed one, tens, and hundreds, let's practice! Which digit is in the ones place? A) 8
B) 3
C) 5
D) 1 853 If I add these two numbers, which digit will be in the tens place? A) 7
B) 9
C) 1
D) 2 295 + 122 Which digit is one less than the digit in the hundreds place? A) 8
B) 3
C) 6
D) 7 836 We have also already learned that after these first three place values, as we get bigger, mathematicians use a comma to separate every three place values. How is the thousand's place formed? A) by bundling together two sets of one hundred
B) by bundling together ten sets of ten
C) by bundling together ten sets of one hundred
D) by taking apart a set of one hundred , , , , , , , , , , , , Just like the smaller place values, the thousands place can only hold nine hundreds. ...and the ten thousand's place can only hold nine thousands... ...and the hundred thousand's place can only hold nine ten thousands. In fact, every place value can only hold nine things from the place value before it before it gets full. So we start with the one's place ten's place hundred's place one thousand's place ten thousand's place hundred thousand's place hundred million's place ten million's place one million's place after millions comes billions trillions quadrillions quintillions sextillions septillions octillions nonillions decillions undecillions duodecillions tredecillions quattuordecillions and quindecillions (that's a number with 48 zeros after it!) and don't forget, each one of these has a one's, ten's, and hundred's place too. ...but the ones you will really need to know are... 625,173,849,056,473.82901 tens hundreds ones thousands millions billions trillions tens hundreds ones tens hundreds ones tens hundreds ones tens hundreds ones Let's practice what we know... Which digit is in the one million's place? A) 8
B) 5
C) 2
D) 0 730,952,148 Which digit is in the ten billion's place? A) 9
B) 2
C) 5
D) 1 827,635,193,501 Which digit is two more than the digit in the hundred thousand's place? 6,253,704,178 A) 7
B) 4
C) 9
D) 2 Round this number to the nearest ten thousand. A) 600,000,000
B) 625,340,000
C) 625,350,000
D) 625,300,000 625,341,870 Which place value is the six in? A) hundred million's
B) hundred thousand's
C) ten million's
D) ten thousand's 73,605,981 Which place value is the seven in? A) ten billion's
B) one million's
C) ten billion's
D) hundred billion's 673,095,128,943 Awesome! Now let's go smaller Remember the ones? The ones are the smallest things that are still whole numbers. But when we divide a one up into ten pieces, we get tenths. This is the place value to the right of the ones place, separated by a decimal. It takes ten tenths to make one whole If we take each of the ten tenths and divide them by ten again, we get one hundred pieces. These one hundred pieces make up the hundredth's place. When I divide up each of the hundred hundredths again, I will now have one thousand thousandths. So I now have the tenth's place the hundredth's place the thousandth's place the ten thousandth's place the hundred thousandth's place
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