Five
14 tens is 140 4 hundreds is 400 The difference is 260.
167 may be written as one hundred sixty-seven. A hyphen should always be used between the tens and units digits when writing out numbers, but never between the hundreds and tens digits.
How would you regroup 4 tens to find the difference between 341 and 228?
hundreds,tens,units
4,490
Rounding is going to the nearest tens, hundreds, thousands etc., depending on the problem. Compatible numbers are numbers the work well with each other. Both of these are estimating.
Place names of numbers, from the right to the left are. Units Tens Hundreds Thousands Tens of Thousands Hundreds of Thousands Millions. So 2,200 Units is '0' Tens is '0' Hundreds is '2' Thiusands is '2'
Make sure that you add units to units, tens to tens, hundreds to hundreds, and so on. Keep the digits which represent the numbers in the correct columns before you add.
421 and 842
Well, isn't that a lovely little math puzzle we have here. If we have 990 tens, that means we have 99 hundreds in total. Each hundred is made up of 10 tens, so by dividing 990 by 10, we find our answer - 99 hundreds in all. Happy little numbers, just waiting to be discovered!
To find how many times the digit '3' appears between 300 and 400, we look at the numbers from 300 to 399. The hundreds place always has '3' for these numbers, contributing one '3' for each of the 100 numbers (300 to 399). Additionally, the '3' appears in the tens place in the numbers 330 to 339, contributing another 10 occurrences. In total, there are 1 (from the hundreds place) + 10 (from the tens place) = 11 occurrences of the digit '3' between 300 and 400.
There is no four digit number where the ones is twice the tens, the hundreds is five less than the ones, and the thousands is the sum of the tens and hundreds. int ones, tens, hundreds, thousands; for (thousands=1; thousands<10; thousands++) { /**/ for (hundreds=0; hundreds<10; hundreds++) { /**/ /**/ for (tens=0; tens<10; tens++) { /**/ /**/ /**/ for (ones=0; ones<10; ones++) { /**/ /**/ /**/ /**/ if (ones != 2 * tens) break; /**/ /**/ /**/ /**/ if (hundreds != ones - 5) break; /**/ /**/ /**/ /**/ if (thousands != tens + hundreds) break; /**/ /**/ /**/ /**/ printf ("dd\n", thousands, hundreds, tens, ones); /**/ /**/ /**/ } /**/ /**/ } /**/ } }