—=—=—=—=— —=—=—= — = —
5 15(25)30(45) 20(5) 10 40 ( 100)
3 3 ×( 3 )( 9 ) 15 15÷( 3 )( 5 )
—=————=———— — = ————=———
5 5×3 15 24 24÷3 ( 8 )
4 ×( 4 ) 24 ÷( 4 )
4 ( 16 ) 24 ( 6 )
—=—————=——— —=—————=———
6 6×( 4 ) 24 28 28 ÷( 4 ) 7
three
A fraction whose denominator is greater than the numerator 15, equal to-. What is the score?
eight
15/(8-3)=3 This score is
3×3 9
——=——
8×3 24
Choose six of the nine numbers (1~9) to form three equal parts, and each number can only be used once.
( 1 ) ( 3 ) ( 4 )
————=————=————
( 2 ) ( 6 ) ( 8 )
First of all, the approximate score
15 9 12 36 18 36
— — — — — —
24 12 15 60 30 48
be qualified for sth
5 3 4 3 3 3
- - - - - -
8 4 5 5 5 4
Second, the following is not about the simplest score becoming the simplest score.
20 10 68 34 30 6 26 13
—=— —=— —=— —=—
36 18 102 5 1 75 15 78 39
be qualified for sth
5 2 2 1
- - - -
9 3 5 3
Three. 5 1
Add a number to the numerator and denominator of a fraction to reduce the fraction. What are the numbers added at the same time?
13 2
( 13-5)×2- 13=3
five
For a fraction, the numerator plus the mother is equal to 168, and the numerator and denominator are each reduced by 6, then the fraction becomes-the original fraction.
seven
What is the number?
( 168-6×2)÷(5+7)= 13
The initial score is
5× 13+6 7 1
————=——
7× 13+6 97
Please write down the lowest common denominator of each group of scores first, and then turn it into the same denominator.
1、
1 3
The lowest common denominator of sum is (12)
3 4
1 1 ×( 4 )( 4 )
—= —————=————
3 3 ×( 4 )( 12 )
3 3 × ( 3 )( 9 )
—=——————=————
4 4 × ( 3 )( 12 )