Elementary school math problems about clocks - Training Enrollment Network

Elementary school math problems about clocks

When the hour hand and the minute hand coincide, it means 12.

The time before 12 is 1 1,10,9, ...

Knocking times are 1 1, 10, 9, 8, 7. The sum of these five numbers is 45.

So she starts doing housework at 7 o'clock.

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