Cai Gaoting's mathematics is quite suitable for learning from scratch, but attention should be paid to the digestion of knowledge in each class. His lecture will explain a lot of things you don't understand when reading, and the content is very comprehensive. You can go and have a look.
I'll show you the bean list of potatoes
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First, fill in the blanks.
1 and+16 are pronounced as (),-as ().
2. All negative numbers are on the side of 0 (), that is, al