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分数乘法简便运算50道

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

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...

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.

175-75÷25 68+35×13 725-(125+237) (114+166)÷35 432÷(9×8) 189-60+40 三、简便计算。 216+315÷15 25×32÷4 47+236÷3+64 6×(15×9)÷30 402+369÷3 43+78+122+257÷7 25×(26÷4) 29+25÷44 354+(229+46)÷5 (1)9.26-4.38-...

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...

1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-(3/2+4/5)8.7/8+(1/8+1/9)9.9×5/6+5/610.3/4×8/9-1/311.7×5/49+3/1412.6×(1/2+2/3)

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...

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