Who has sixth grade oral arithmetic, quick calculation and mental arithmetic problems? There are three kinds: simple, difficult and difficult.

What does this offer? It's no use reviewing the topic. Why don't you take some notes:

For example, these are very common:

0.25= one quarter

0.75= three quarters

0.3 period = one third

0. 125= one eighth

0.375= three eighths

0.625= five eighths

0.785= seven eighths

Like the sixth grade, these figures should be memorized.

Oral arithmetic in grade six is no longer a simple integer decimal, so things like these are particularly important. As for the topic, I don't think it needs too much review.

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