分数乘法计算练习题.doc

一、分数与整数相乘。 1627 ×54=11× 922 = 1415 ×20= 1819 ×38=36× 527 =100 × 2425 = 二、分数和分数相乘。(注意:能约分的先约分,再计算。) 9 11 × 7 15 = 12 25 × 15 16 = 45 × 9 10 = 6 11 × 22 15 = 17 27 × 45 68 = 19 33 × 11 38 = 8 17 × 17 20 = 13 21 × 7 26 = 89 × 27 40 = 13 19 × 38 39 = 9 10 × 50 63 = 12 34 × 17 36 = 三、分数乘、加、减混合。 7 16 ×( 50 63 - 27 ) 45 × 15 16 × 14 56 × 34 +1 23 + 5 12 × 4 15 9 14 - 59 × 27 35 1- 18 19 × 38 45 6 15 ×(5- 5 13 ) 19 91 ×7+ 8 13 四、分数乘、加、减简便运算。 13 15 × 7 26 ×5( 58 + 11 12 )× 24 9 14 × 17 18 × 14 ( 56 - 49 )× 36 99× 97 98 9 13 - 7 18 × 9 13 67 × 12× 7 12 8 15 × 47 × 3 16 9 11 × 97× 119 38 × 7 12 + 5 12 × 38 5 17 × 79 + 79 × 4 17 12 25 × 15- 7 25 × 15 分数乘法计算题练习 121 25× 50 11 × 4 38 5× 1 8 3×81 6 5×3 1 9 4× 18 15 7 5× 5 2 2 15 2× 6 56 5× 24 4 3× 9 5× 15 2 11 8× - 1 7 4× 21 4 3×1 5 1 ×1 9 5 1 4 3×1 7 1×2 2 11 4 3× 11 6× 21 22 3 1× 36 26× 13 10 3 11 3× 22 ×5 6 1 ×2 11 2 14×4 7 42 6 5× 12 9 4×7 2 1 × 4 3 72× 12 524 17× 34 925 18× 16 5 19 17× 51 3836 19× 24