1) Arrange 24 matches into two squares, one big and one small, and ask him to move the four matches in the picture first, so that the two squares become three; Then move eight more, so that the figure becomes nine congruent squares; Finally, remove 8 blocks to make the figure into 5 squares.

The figure is two squares, one big and one small, and the small square is in the middle of the big square. Like a "back")

|￣ ￣￣ ￣|

| |￣￣| |

| |__| |

|_ __ _|

Move 4 pieces

|￣￣￣|￣|

|￣￣￣|￣|

| | |

|___|_|

2) Eight matchsticks make up 1 square, which can move matchsticks (without reducing the total number of matchsticks). The new graphic area is the square area of 1/2.

If there is no limit to the number of matches you can move, you can move four matches on a diagonal.

In this way, two small squares composed of four matches are formed.

The general shape is as follows:

mouth

... mouth

3) The following is a match game: How to move matches to make the equation hold:11+1-1= 4.

1 14+ 1- 1 1 1=4

4) 1 1+7=2 How to move only one match to make the formula hold?

Move the bottom match of 2 between two 1, and it becomes:

1- 1+7=7

5) Make a match stick into 4-3=8. How to move the matchstick to make the equation hold?

Remove one of the four, 1 1-3=8.

Baidu has some such problems!