Worked examples
Two examples
Example 1
√144 =
- Which number times itself makes 144? 12 × 12 = 144.
Answer: 12
Example 2
√289 =
- 17 × 17 = 289.
Answer: 17
Where this is taught: Quiz 30: Square and Cube Roots, “Reading the diagonal backward”
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.