Overview: 7 questions will be solved this time.Among them
☆7 fraction calculations
[ 1/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 7/8-3/10 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 8 and 10 respectively,their least common multiple is 40
Divide the least common multiple 40 by the denominator 8 of the minuend to get 5
Multiply the numerator 7 and denominator 8 of the subtracted number by 5
Then divide the least common multiple 40 by the denominator 10 of the subtraction to get 4
Multiply the subtracted numerator 3 and denominator 10 by 4 at the same timeCalculation result: [ 2/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 7/20-3/40 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 20 and 40 respectively,their least common multiple is 40
Divide the least common multiple 40 by the denominator 20 of the minuend to get 2
Multiply the numerator 7 and denominator 20 of the subtracted number by 2
Then divide the least common multiple 40 by the denominator 40 of the subtraction to get 1
Multiply the subtracted numerator 3 and denominator 40 by 1 at the same timeCalculation result: [ 3/7 Fraction calculation ]
Question type: Fractional addition
Original question: 3/4+5/7 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 4 and 7 respectively,their least common multiple is 28
Divide the least common multiple 28 by the denominator 4 of the first addend to get 7
Multiply the numerator 3 and denominator 4 of the first fraction by 7
Then divide the least common multiple 28 by the denominator 7 of the second addend to get 4
Multiply the numerator 5 and denominator 7 of the second fraction by 4 Calculation result: [ 4/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 5/9-5/12 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 9 and 12 respectively,their least common multiple is 36
Divide the least common multiple 36 by the denominator 9 of the minuend to get 4
Multiply the numerator 5 and denominator 9 of the subtracted number by 4
Then divide the least common multiple 36 by the denominator 12 of the subtraction to get 3
Multiply the subtracted numerator 5 and denominator 12 by 3 at the same timeCalculation result: [ 5/7 Fraction calculation ]
Question type: Fractional addition
Original question: 3/4+1/5 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 first addend to get 5
Multiply the numerator 3 and denominator 4 of the first fraction by 5
Then divide the least common multiple 20 by the denominator 5 of the second addend to get 4
Multiply the numerator 1 and denominator 5 of the second fraction by 4 Calculation result: [ 6/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 7/6-1/3 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 6 and 3 respectively,their least common multiple is 6
Divide the least common multiple 6 by the denominator 6 of the minuend to get 1
Multiply the numerator 7 and denominator 6 of the subtracted number by 1
Then divide the least common multiple 6 by the denominator 3 of the subtraction to get 2
Multiply the subtracted numerator 1 and denominator 3 by 2 at the same timeCalculation result: [ 7/7 Fraction calculation ]
Question type: Fractional subtraction
Original question: 10/11-2/3 Solution:
Divide two fractions with defferent denominators:The denominators of two fractions are 11 and 3 respectively,their least common multiple is 33
Divide the least common multiple 33 by the denominator 11 of the minuend to get 3
Multiply the numerator 10 and denominator 11 of the subtracted number by 3
Then divide the least common multiple 33 by the denominator 3 of the subtraction to get 11
Multiply the subtracted numerator 2 and denominator 3 by 11 at the same timeCalculation result:
>>注:本次最多计算 7 道题。
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