Three-Digit Place Value — Answer Key
Part A: Sort the Words
Sort each word or number into the correct category box.
1. Sort each statement by which place value changes.
Changes the tens digit
10 more than 24510 less than 39010 more than 527 Changes the hundreds digit
100 less than 678100 more than 412100 less than 850 A jump of 10 changes the tens digit and a jump of 100 changes the hundreds digit, unless there is regrouping.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. 10 more than 347 is 357.
347 plus 10 equals 357, since the tens digit grows from 4 to 5 while hundreds and ones stay the same.
2. 10 less than 562 is 552.
562 minus 10 equals 552, because the tens digit drops from 6 to 5 and the rest stays the same.
3. 100 more than 218 is 318.
218 plus 100 equals 318, since only the hundreds digit shifts from 2 to 3.
4. 100 less than 704 is 604.
704 minus 100 equals 604, because the hundreds digit falls from 7 to 6 and tens and ones are unchanged.
5. 10 more than 489 is 499.
489 plus 10 equals 499, with the tens digit moving from 8 to 9 while ones stay at 9.
Part C: True or False?
Read each statement. Circle True or False.
1. 10 more than 356 is 366.
True False
Adding 10 to 356 gives 366, since the tens digit moves from 5 to 6 with no other change.
2. 100 less than 590 is 490.
True False
590 minus 100 equals 490, because the hundreds digit drops from 5 to 4.
3. 10 less than 420 is 320.
True False
10 less than 420 is 410, while 320 would be 100 less, so the statement is not true.
4. 100 more than 645 is 655.
True False
100 more than 645 is 745, since the hundreds digit grows by 1, while 655 is only 10 more than 645.