How can you find the solution to an addition or subtraction problem by guessing? Practice the guess-and-check strategy with a fun math activity based on Ms. Squid's ink mess on the homework. Kids determine which number is covered by the ink in each problem using reasonable guesses.

Concepts

the guess and check strategy, guess and check, addition, magic squares, subtraction

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Additional Tags

math

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Instructional Ideas

• Include in a homework packet for extra practice
• Have kids work together in small groups or in a math center to complete the worksheet
• Come up with additional magic squares for kids to work on

Classroom Considerations

• The example focuses on a magic squares activity, but the actual exercise contains standard problems rather than magic squares

Pros

• Includes a fun story that goes with the math worksheet
• A good strategy to introduce to learners before moving on to more complex concepts

Cons

• None

Common Core

2.NBT.B.5