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  • 六年級分數(shù)四則運算題

    六年級分數(shù)四則運算題
    數(shù)學人氣:967 ℃時間:2020-04-06 13:38:36
    優(yōu)質(zhì)解答
    1. 6÷ 3/8 – 3/8 ÷6
    =1/6x(3/8-3/8)
    =1/6x0
    =0
    2. 4/7 × 5/9 + 3/7 × 5/9
    =(4/7+3/7)x5/9
    =1x5/9
    =5/9
    3. 5/2 -( 3/2 + 4/5 )
    =5/2-3/2-4/5
    =1-4/5
    =1/5
    4. 6 ×( 1/2 + 2/3 )
    =6x1/2+6x2/3
    =3+4
    =7
    5. 8 × 4/5 + 8 × 11/5
    =8x(4/5+11/5)
    =8x3
    =24
    6. 31 × 5/6 – 5/6
    =(31-1)x5/6
    =30x5/6
    =25
    7. 4/5 × 25/16 + 2/3 × 3/4
    =5/4+1/2
    =5/4+2/4
    =7/4
    8. 101 × 1/5 – 1/5 × 21
    =(101-21)x1/5
    =80x1/5
    =16
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