Overview: 7 questions will be solved this time.Among them
           ☆2 arithmetic calculations
           ☆2 fraction calculations
           ☆1 integer calculations
           ☆2 convert the decimals to fractions

[1/7 Formula]
    Work: Calculate the value of equation 9+99+999+9999+99999 .
    Question type: Mathematical calculation
    Solution:
          9+99+999+9999+99999
        =108+999+9999+99999
        =1107+9999+99999
        =11106+99999
        =111105
    Answer:9+99+999+9999+99999=111105
[ 2/7 Digital analysis ]
    Work: Convert decimal 3.58 to fractional form.
    Question type: Convert decimal to fraction
    Solution:

3.58=

179 50

    *Note: Convert finite decimal to fraction.
[ 3/7 Fraction calculation ]
    Question type: Fractional multiplication
    Original question: 1/2*2/6
    Solution:

1 2

×

2 6

    Reduce the second multiplier by 2

=

1 2

×

1  2   6  3

=

1 2

×

1 3

    Calculation result:

=

1 6

[ 4/7 Fraction calculation ]
    Question type: Fractional addition
    Original question: 1/3+3/5
    Solution:

1 3

+

3 5

    Divide two fractions with defferent denominators:The denominators of two fractions are 3 and 5 respectively,their least common multiple is 15
    Divide the least common multiple 15 by the denominator 3 of the first addend to get 5
    Multiply the numerator 1 and denominator 3 of the first fraction by 5
    Then divide the least common multiple 15 by the denominator 5 of the second addend to get 3
    Multiply the numerator 3 and denominator 5 of the second fraction by 3

=

5 15

+

9 15

    Calculation result:

=

14 15

[5/7 Formula]
    Work: Calculate the value of equation 8.888+9.999+11.110 .
    Question type: Mathematical calculation
    Solution:
          8.888+9.999+11.110
        =18.887+11.11
        =29.997
    Answer:8.888+9.999+11.110=29.997
[ 6/7 Digital analysis ]
    Work: Convert decimal 3.54 to fractional form.
    Question type: Convert decimal to fraction
    Solution:

3.54=

177 50

    *Note: Convert finite decimal to fraction.
[7/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2/7
    Solution:
    2/7 = 0 ··· ··· 2
    Column vertical calculation:

		0
7	丿	2
		0
		2

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>>注：本次最多计算 7 道题。

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