Grade 4 Place Value: Unit Review

Worked examples

Real problems from the practice worksheets, solved one step at a time.

1. Example 1

   Round 451,778 to the nearest 1000

   1. To round 451,778 to the nearest thousand, look at the digit in the hundreds place.
   2. That digit is 7, which is 5 or more, so round UP.
   3. So 451,778 rounded to the nearest thousand is 452,000.

   Answer: 452,000

2. Example 2

   23,850 ___ 28,850

   1. To compare 23850 and 28850, look at how big each number is. For bigger numbers, compare one place at a time, starting from the left.
   2. 23850 is less than 28850.
   3. So 23850 < 28850. The open, wide end of the sign always faces the bigger number.

   Answer: <

3. Example 3

   What number is 100,000 + 40,000 + 3000 + 80 + 9?

   1. To build the number, add the value of each place: 100000 + 40000 + 3000 + 80 + 9.
   2. 100000 + 40000 + 3000 + 80 + 9 = 143089.

   Answer: 143089