Worked examples
Two examples
Example 1
√50 is between which two whole numbers?
- The perfect squares on either side of 50: 72 = 49 and 82 = 64.
- 50 is between them.
Answer: 7 and 8
Example 2
√110 is between which two whole numbers?
- 102 = 100 and 112 = 121.
Answer: 10 and 11
Where this is taught: Quiz 30: Square and Cube Roots, “When the root is not a whole number”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Type the two whole numbers, like 7 and 8. Then press Check my answers at the bottom.Write the numbers on the line. The answer key, with the reasoning, is on the last page.