Open a full box of matchsticks.
- Estimate the number of matchsticks in the box: ...
- Count the number of matchsticks in the box: ...
- How close was your estimate?
- How many boxes of matchsticks will get the total close to 100 matchsticks? ... boxes.
Step 1: Look at the matchstick box and estimate how many matchsticks it contains.
Step 2: Count the actual number of matchsticks.
Step 3: Compare estimate with actual count to see how close the estimate was.
Step 4: Calculate: If one box has X matchsticks, then = number of boxes needed for approximately 100.
Explanation
This activity develops estimation skills and understanding of quantity. Students learn to make reasonable guesses and then verify through counting. They also apply multiplication or repeated addition to find how many boxes would give close to 100 matchsticks.
Solution Steps
Step 1: Look at the matchstick box and estimate how many matchsticks it contains.
Step 2: Count the actual number of matchsticks.
Step 3: Compare estimate with actual count to see how close the estimate was.
Step 4: Calculate: If one box has X matchsticks, then 100 ÷ X = number of boxes needed for approximately 100.