Grades 3-4 Video Solutions 2020-2020Levels34prob8

Video Transcription

Video Summary

Casper needs to cover a grid with seven available pieces, using as many different ones as possible without overlapping. The grid has 17 squares, while all pieces total 28 squares, so using all seven is impossible. By removing any two pieces that collectively cover 11 squares (e.g., a 7-square piece and a 4-square piece or a 6-square piece and a 5-square piece), Casper can use the remaining five pieces to achieve a total of 17 squares, perfectly covering the grid. Therefore, the maximum number of different pieces Casper can use is five. The answer is C, five.

Keywords

grid

pieces

cover

maximum

Casper