This is from Weekly Homework Sheet (3).What 3 digits are in the units period? 8174,083,817
4, 3, 7
9,7,3
9,827,273The 3 digits in the thousand period is 827.
Commas are used to separate large numbers into groups of three digits. Each group is called a period.
This is from Weekly Homework Sheet (3).What 3 digits are in the units period? 8174,083,817
4, 3, 7
9,7,3
This is from Weekly Homework Sheet (3).What 3 digits are in the thousands period? 8279,827,273
9,827,273The 3 digits in the thousand period is 827.
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.
Commas are used to separate large numbers into groups of three digits. Each group is called a period.
What is the units digit of the least whole number greater than 1000 whose digits are all different?
That happens ten times in a 12-hour period.
Commas are used to separate large numbers into groups of three digits. Each group is called a period.
There is no easy test for divisibility by 7, it is often just as quick, if not quicker, to do the division than any devised test. One test I can suggest: 1) split the number into blocks of 3 digits starting from the right hand end (just like when inserting commas to make a number easier to read); 2) Separately sum the units digits, tens digits and hundreds digits of each block by alternately subtracting and adding starting from the right hand end; 3) Add the sum of the units digits to 3 times the sum of the tens digits to twice the sum of the hundreds digits; 4) if the sum in step 4 is divisible by 7, then so is the original number. got 473: 3 +3×7 + 2×4 = 32 which is not divisible by 7, so 473 is not divisible by 7.