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Time skills in the mirror image of mathematics in grade three
The time skills in the third grade math mirror are as follows: 1, and the symmetry principle is used to judge quickly.

The time in the mirror and the actual time are just symmetrical with 12:00. According to this principle, we can judge the actual time according to the time seen in the mirror.

The specific analysis is as follows:

The mirror says 3 o'clock sharp, so what's the actual time? The specific method is to take the straight line of 12:00 as the axis of symmetry and draw a symmetrical figure of 3:00. In another symmetrical figure, the hour hand sets the actual time, and the actual time is 9:00.

2, the method of folding.

Turn the clock in the title upside down, that is, pick up the paper with the clock and look from the back. This is real time.

3. Calculate by subtraction.

Subtracting the time in the mirror from 12 is the actual reality. In fact, this method is very simple and suitable for quick judgment in the exam. This principle is still based on the symmetry principle.

The time in the mirror is 8 o'clock, but the actual time is 4 o'clock. The time in the mirror is 3:30, but the actual time is 9:30.

The relationship between mirror of time and real time: mirror of time and real time are axisymmetric figures. Everything in the mirror is contrary to the real world, so the time in the mirror is also symmetrical with the time in the real world, and the mirror will cause the opposite phenomenon to the real world.