Overview: 7 questions will be solved this time.Among them
☆7 fraction calculations
[ 1/7 Fraction calculation ]
Question type: Fractional addition
Original question: 7/12+1/6 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 12 and 6 respectively,their least common multiple is 12
Divide the least common multiple 12 by the denominator 12 of the first addend to get 1
Multiply the numerator 7 and denominator 12 of the first fraction by 1
Then divide the least common multiple 12 by the denominator 6 of the second addend to get 2
Multiply the numerator 1 and denominator 6 of the second fraction by 2 Calculation result: The calculation result is reduced by 3[ 2/7 Fraction calculation ]
Question type: Fractional addition
Original question: 6/7+11/14 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 7 and 14 respectively,their least common multiple is 14
Divide the least common multiple 14 by the denominator 7 of the first addend to get 2
Multiply the numerator 6 and denominator 7 of the first fraction by 2
Then divide the least common multiple 14 by the denominator 14 of the second addend to get 1
Multiply the numerator 11 and denominator 14 of the second fraction by 1 Calculation result: [ 3/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 5/4-2/5 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 4 and 5 respectively,their least common multiple is 20
Divide the least common multiple 20 by the denominator 4 of the minuend to get 5
Multiply the numerator 5 and denominator 4 of the subtracted number by 5
Then divide the least common multiple 20 by the denominator 5 of the subtraction to get 4
Multiply the subtracted numerator 2 and denominator 5 by 4 at the same timeCalculation result: [ 4/7 Fraction calculation ]
Question type: Fractional addition
Original question: 3/5+2/3 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 5 and 3 respectively,their least common multiple is 15
Divide the least common multiple 15 by the denominator 5 of the first addend to get 3
Multiply the numerator 3 and denominator 5 of the first fraction by 3
Then divide the least common multiple 15 by the denominator 3 of the second addend to get 5
Multiply the numerator 2 and denominator 3 of the second fraction by 5 Calculation result: [ 5/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 11/14-3/7 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 14 and 7 respectively,their least common multiple is 14
Divide the least common multiple 14 by the denominator 14 of the minuend to get 1
Multiply the numerator 11 and denominator 14 of the subtracted number by 1
Then divide the least common multiple 14 by the denominator 7 of the subtraction to get 2
Multiply the subtracted numerator 3 and denominator 7 by 2 at the same timeCalculation result: [ 6/7 Fraction calculation ]
Question type: Fractional addition
Original question: 5/54+11/27 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 54 and 27 respectively,their least common multiple is 54
Divide the least common multiple 54 by the denominator 54 of the first addend to get 1
Multiply the numerator 5 and denominator 54 of the first fraction by 1
Then divide the least common multiple 54 by the denominator 27 of the second addend to get 2
Multiply the numerator 11 and denominator 27 of the second fraction by 2 Calculation result: The calculation result is reduced by 27[ 7/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 4/3-3/8 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 3 and 8 respectively,their least common multiple is 24
Divide the least common multiple 24 by the denominator 3 of the minuend to get 8
Multiply the numerator 4 and denominator 3 of the subtracted number by 8
Then divide the least common multiple 24 by the denominator 8 of the subtraction to get 3
Multiply the subtracted numerator 3 and denominator 8 by 3 at the same timeCalculation result:
>>注:本次最多计算 7 道题。
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