This is from Weekly Homework Sheet (3).
What 3 digits are in the thousands period? 827
9,827,273
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period
There are 3 identical digits in the units period. If the number started with 23 then 2 + 3 = 5 and 20 - 5 = 15 which is divisible by three. If the number started with 24 then 2 + 4 = 6 and 20 - 6 = 14 is not divisible by 3. So the number is 23,000,555.
3. Split the number into blocks of 3 digits from the right hand end (34 816). Then in each block, the digits are H-T-U = Hundreds-Tens-Units. From the right hand end the blocks are "none", "Thousands", "Millions", ... So the ten thousands place is the tens digit (second from right hand end of the block) of the thousands block (second from the right hand end): thousands.......none .... HTU............ HTU ........34............. 816 Ten-thousands digit = 3.
There are 5 digits in the number 67392. Each digit represents a place value in the number, with the leftmost digit being the ten-thousands place and the rightmost digit being the ones place. In this case, the digits are 6, 7, 3, 9, and 2.
I could give you the answer, but it will be more fun if you try to figure it out yourself. Here are the basic rules: To the right of "millions", there should be 6 digits. In other words, write the "13" and make sure there are 6 digits to the right of these digits. To the right of the thousands, in this case, the digits "18", there should be 3 digits. Use zeroes to fill out.