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分数乘法计算练习题

分数的乘法的计算可以用到乘法的分配律、交换律等公式,例如: 5×(2/3)+4*(2/3) =(5+4)*(2/3) =9*(2/3) =6.

二、分数乘法 一、计算题要仔细。 1、直接写得数。 14 × 25 = 56 ×12= 712 × 314 = 45× 35 = 9×718 = 23 × 910 = 18×16 = 411 × 114 = 42× = 11× = = × = × = = = × = 2、能简算的要简算。 ( 34 +58 )×32 59 × 34 +59 × 14 49× 二、...

3/7 × 49/9 - 4/3 12× 5/6 – 2/9 ×3 8× 5/4 + 1/4 6÷ 3/8 – 3/8 ÷6 4/7 × 5/9 + 3/7 × 5/9 5/2 -( 3/2 + 4/5 ) 7/8 + ( 1/8 + 1/9 ) 9 × 5/6 + 5/6 3/4 × 8/9 - 1/3 7 × 5/49 + 3/14 6 ×( 1/2 + 2/3 ) 8 × 4/5 + 8 × 11/5 31 × 5/6 – 5/6 ...

(1/3)*(1/4)*(1/5)=1/60 (1/2)*(2/3)*(3/4)=1/4 (1/√2)*(√2/2)*(2/3)=1/3 (√17+√19)/(√2+√3)*(√17-√19)/(√3-√2)*(-2)/(3^3)=4/27 (7!/8!)*(4!/3!)*(5!/6!)=1/12

1/6 * 35 + 5/6 * 17 =3/4 * 13 + 3/4 * 27 =3/4 *(13+27) =3/4 * 40 =30 55 * 55/56 =(56-1) * 55/56 = 56 * 55/56 - 55/56 =55- 55/56 =54又1/56 2又4/5 * 3/7 + 3/5 * 1/7 = 2又4/5 * 3/7+ 1/5 * 3/7 =3/7 * (2又4/5 + 1/5) =3/7 * 3 =...

1.3/7 × 49/9 - 4/3 2.8/9 × 15/36 + 1/27 3.12× 5/6 – 2/9 ×3 4.8× 5/4 + 1/4 5.6÷ 3/8 – 3/8 ÷6 6.4/7 × 5/9 + 3/7 × 5/9 7.5/2 -( 3/2 + 4/5 ) 8.7/8 + ( 1/8 + 1/9 ) 9.9 × 5/6 + 5/6 10.3/4 × 8/9 - 1/3 11.7 × 5/49 + 3/14 12.6 ×( 1...

1/6 * 35 + 5/6 * 17 =3/4 * 13 + 3/4 * 27 =3/4 *(13+27) =3/4 * 40 =30 55 * 55/56 =(56-1) * 55/56 = 56 * 55/56 - 55/56 =55- 55/56 =54又1/56 2又4/5 * 3/7 + 3/5 * 1/7 = 2又4/5 * 3/7+ 1/5 * 3/7 =3/7 * (2又4/5 + 1/5) =3/7 * 3 =...

非题

56×3/4+44×3/4 102×3/4+2×3/4 4/23×22+4/23 2/3×100-2/3 1/4×99+1/4 9×3/5+9×2/5 很高兴为你解答,满意请采纳,谢谢 !

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