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Each one of them is smaller than 100.
So 4 of them will be less than 4 lots of 100 or 400.
To prove that statement:
Suppose the 4 numbers are a, b, c and d.
Each of them is less than 100.
a < 100 so a = 100 - w for some positive number w.
Similarly, b = 100 - x; c = 100 - y; and d = 100 - z where x, y and z are also positive numbers.
Adding these 4 together,
a + b + c + d = 100 - w + 100 - x + 100 - y + 100 - z
= 400 - (w + x + y + z)
Now each of w, x, y and z is positive. Therefore, w+x+y+z is positive (the set of positive numbers is closed under addition).
So a + b + c + d = 400 - some positive number
ie a + b + c + d < 400
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Why can't 4 two-digit addends be greater than 400?
404
How can you round 375 to the nearest 100?
When rounding in the hundreds, you round when the tenths digit is greater than or equal to 5. In this case, 7 isgreater than 5, so you will round the ones digit up to the next- the answer is 400.(400)
I am a 3- digit number all of my digits are odd i am less than 600 i am greater than 400 if you add my digits you get 15 my last digit is 7 what am i?
537
What is a 400 digit number called?
I would just call it a "400-digit number".
What is 391 rounded to the nearest hundred?
400
How do you round 393 to the nearest ten?
When rounding to the nearest 10, you look at the last digit and if it is greater than or equal to 5, then you add one to the next to last digit and make the last digit 0. If it is less than 5 then you simply make the last digit 0. Thus 393 rounds to 390 while 395 becomes 400.
How do you round 373 to the nearest hundred?
400
What plus what equals 820?
The two numbers that add up to 820 are called addends. In this case, the addends are 410 and 410. When you add 410 and 410 together, you get the sum of 820. This is an example of a basic addition problem where the addends are the same number.
What is 378 rounded to the nearest hundred?
400
How many 3-digit numbers greater than 400 use the digits 1 5 and 6 only once?
Four: 516,561,615 & 651.
What must a four digit number end in to be divisible by 400?
All of the four-digit multiples of 400 end in 00.
What is the leading digit of 473?
It is the first or leftmost digit: 4.
