五年级两位数小数乘法111道
两位数的小数乘法练习题
两位数的小数乘法练习题一、练习题请计算以下两位数小数的乘法练习题:1. 12.5 × 4.3 =2. 18.7 × 6.2 =3. 23.4 × 7.9 =4. 56.8 × 3.5 =5. 34.9 × 8.7 =6. 45.6 × 2.4 =7. 67.2 × 9.8 =8. 89.1 × 5.6 =9. 71.3 × 4.9 =10. 52.6 × 6.3 =二、解答与步骤1. 12.5 × 4.3 = 53.752. 18.7 × 6.2 = 115.943. 23.4 × 7.9 = 184.864. 56.8 × 3.5 = 198.85. 34.9 × 8.7 = 303.636. 45.6 × 2.4 = 109.447. 67.2 × 9.8 = 658.568. 89.1 × 5.6 = 499.769. 71.3 × 4.9 = 349.3710. 52.6 × 6.3 = 330.38三、解题思路解答这些两位数小数的乘法练习题,我们需要按照以下步骤进行计算:1. 确定要相乘的两个小数,将它们按照相应位数对齐。
2. 从右侧开始,依次计算每一位的乘积,将结果写在相应位上,并保留小数点位置。
3. 将所有乘积相加,并将小数点对齐。
4. 最后得到的结果即为乘法运算的答案。
以第一道题目为例,我们有12.5 × 4.3,按照步骤计算如下:```12.5× 4.3________75 ← 12.5 × 3 的结果+ 375 ← 12.5 × 4 的结果再向左移动一位________53.75```所以12.5 × 4.3 = 53.75。
同样的步骤可以应用到其他乘法练习题中,只需要注意位数对齐和小数点的处理即可。
两位数三位数和小数的乘法和除法算式练习题
两位数三位数和小数的乘法和除法算式练习题题目一:两位数乘法1. 35 × 42 = ________2. 18 × 27 = ________3. 53 × 29 = ________4. 86 × 57 = ________5. 71 × 38 = ________题目二:两位数除法1. 84 ÷ 7 = ________2. 66 ÷ 3 = ________3. 39 ÷ 8 = ________4. 57 ÷ 9 = ________5. 92 ÷ 4 = ________题目三:三位数乘法1. 255 × 386 = ________2. 431 × 592 = ________3. 126 × 739 = ________4. 687 × 412 = ________5. 543 × 674 = ________题目四:三位数除法1. 676 ÷ 26 = ________2. 855 ÷ 15 = ________3. 312 ÷ 26 = ________4. 478 ÷ 39 = ________5. 943 ÷ 74 = ________题目五:小数乘法1. 0.3 ×2.5 = ________2. 1.8 × 0.6 = ________3. 0.5 × 0.7 = ________4. 4.2 × 0.9 = ________5. 0.1 × 5.3 = ________题目六:小数除法1. 2.4 ÷ 0.6 = ________2. 5.1 ÷ 1.7 = ________3. 3.9 ÷ 0.3 = ________4. 9.6 ÷ 2.4 = ________5. 7.8 ÷ 1.3 = ________解答:题目一:两位数乘法1. 35 × 42 = 14702. 18 × 27 = 4863. 53 × 29 = 15374. 86 × 57 = 49025. 71 × 38 = 2698题目二:两位数除法1. 84 ÷ 7 = 122. 66 ÷ 3 = 223. 39 ÷ 8 =4.8754. 57 ÷ 9 = 6.333...5. 92 ÷ 4 = 23题目三:三位数乘法1. 255 × 386 = 984302. 431 × 592 = 2557123. 126 × 739 = 930144. 687 × 412 = 2830445. 543 × 674 = 365982题目四:三位数除法1. 676 ÷ 26 = 262. 855 ÷ 15 = 573. 312 ÷ 26 = 124. 478 ÷ 39 = 12.256...5. 943 ÷ 74 = 12.770...题目五:小数乘法1. 0.3 ×2.5 = 0.752. 1.8 × 0.6 = 1.083. 0.5 × 0.7 = 0.354. 4.2 × 0.9 = 3.785. 0.1 × 5.3 = 0.53题目六:小数除法1. 2.4 ÷ 0.6 = 42. 5.1 ÷ 1.7 = 33. 3.9 ÷ 0.3 = 134. 9.6 ÷ 2.4 = 45. 7.8 ÷ 1.3 = 6通过以上练习题,我们可以进行两位数、三位数和小数的乘法和除法计算。