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20 12 how to write the title 1 on page 30 of the first volume of fifth grade mathematics in primary school?
(1)6.3÷3=2. 1 A: Xiaoming's entertainment and fitness time is 2. 1 times of his study time.

(2) One day =24 hours 24-(9.5+3+6.3+ 1)=4.2 (hours) A: Xiaoming spent 4.2 hours doing other things.

(3) How many times does Xiao Ming spend his other time studying? 4.2÷3= 1.4 A: Xiaoming's other time is 1.4 times of his study time.