分数乘法计算练习题 一、分数与整数相乘。 5 ×4= 12 13 24× = 48 4 ×15= 25 13 17× = 51 16 ×54= 27 18 ×38= 19 6 26× = 13 2 ×7= 21 7 ×12= 18 14 ×30= 15 9 11× = 22 5 36× = 27 11 ×5= 15 3 ×20= 10 9 = 20 16× 10 ×121= 11 14 ×20= 15 24 100× = 25 二、分数和分数相乘。 (注意:能约分的先约分,再计算。 ) 2 3 × = 5 4 9 7 × = 11 15 2 15 × = 3 16 14 25 × = 15 21 6 22 × = 11 15 8 17 × = 17 20 13 38 × = 19 39 6 7 × = 7 8 12 15 × = 25 16 7 5 × = 8 21 20 3 × = 27 8 17 45 × = 27 68 13 7 × = 21 26 9 50 × = 10 63 5 8 × = 9 15 4 9 × = 5 10 4 27 × = 9 16 7 18 × = 9 35 19 11 × = 33 38 8 27 × = 9 40 12 17 × = 34 36 1 三、分数乘、加、减混合。 7 50 2 ×( - ) 16 63 7 4 15 × ×14 5 16 5 3 × +1 6 4 2 5 4 + × 3 12 15 9 5 27 - × 14 9 35 18 38 1 - × 19 45 6 5 ×(5- ) 15 13 19 8 ×7+ 91 13 四、分数乘、加、减简便运算。 13 7 × ×5 15 26 5 11 ( + )×24 8 12 9 17 × ×14 14 18 5 4 ( - )×36 6 9 99× 97 98 9 7 9 - × 13 18 13 6 7 ×12× 7 12 8 4 3 × × 15 7 16 9 11 ×97× 11 9 3 7 5 3 × + × 8 12 12 8 5 7 7 4 × + × 17 9 9 17 12 7 ×15- ×15 25 25 2 分数乘法计算题练习 7× 8 21 4 5 × 5 16 3 8 × 4 9 8× 1 8 2 ×10 5 3 ×24 8 5 ×12 8 3 1 × 4 2 4 3 × 9 8 4 ×21 4 11 36 × 12 121 15× 1 5 56× 9 14 4 3 × 9 8 7 4 × 12 7 25 11 × 121 50 3.6× 3 4 5 ×1.6 8 3 1 ×8 8 1 5 ×3 6 5 ×24 6 1 4 ×18 9 15 5 2 × 7 5 8 ×3.3-0.9 11 2 5 2 × 15 6 3 5 2 × × 4 9 15 1 4 ×21 7 3 1 ×1 4 5 2.7×1 5 9 1 3 1 1 ×1 ×2 4 2 7 1 3 6 2 × × 4 11 21 2 11 2 1 26 10 × × 3 36 13 3 3 × 22 11 4.5 × 5 3 4 1 6 3.3×2 14×4 4 7 2 5 ×12 6 1 4 ×7 2 9 3.6× 150× 2 15 11 ×5 15 27× 5 18 9 ×15 20 19× 1 2 72× 5 12 17 9 × 24 34 5 18 × 25 16 17 38 × 19 51 19 ×24 36 48× 13 16 26 28 × 63 39 3 1 ×0.32 8 28× 5 6 7 8 8 1 ×0.875 7 6 17 3.25× 1 ×3.5 7 4 13 1 2 × 0.4 3 4.5 ×1 2.125× 2 3 3 2 4 ×0.56 7 0.85× 1 3 17 2.3×1 19 23 1 3 ( + )×12 3 4 79 × 101 100 5 2 2 ×6 +6 ×0.375 8 7 7 2 1 ×5 4 1.5 ×2 2 3 4.4× 5 11 4 5 ×0.48 6 1 1 ×3.5 14 32 × 3 1 3 ( 7 1 - )×50 25 5 4 2 2 7 × 1 × 5 7 11 2 2 ×6×2.6 3 3 2 2 × × 4 5 3 4 7 × 21 21 3 7 5 × × 5 9 21 35 8 6 × × 48 15 7 108× 7 18 64 19 × 95 32 9 35 × 14 36 5 ×120 24 11 25 × 15 33 17 72 × 36 85 4 5 + 15 12 29 56 × 42 87 3 2 × 3 4 8 5 ×2 11 14 1 2 ×2 2 3 3 8 1 × 8 11 4 2 10 × 5 11 2 4 15 × 5 28 2 2 1 ×1 5 7 2 2 4 ×1 3 5 3 5 8 2 × ×1 7 13 7 2 5 2 4 ×1 × 8 3 39 3 4 7 × 4 × 5 18 5 1 3 2 ×3 × 8 9 7 19 4 25 × × 20 9 38 11 2 4 ×1 ×1 18 3 5 2 5 ×12 6 3 3 ×14 7 1 5 ×4 5 3 7 ×2 8 3 1 ×4 2 7 ×3 2 15 7 5 ×12 12 6 2 4 ×6 3 5 35 ×35 36 44 ×46 45 4