2024年4月7日发(作者：)

3位数乘2位数计算题

英文回答：

Multiplying a 3-digit number by a 2-digit number is a

common math problem. It involves multiplying each digit of

the 3-digit number by each digit of the 2-digit number and

adding up the results.

For example, let's say we have the 3-digit number 456

and the 2-digit number 23. To multiply them, we start by

multiplying the ones digit of the 3-digit number (6) by the

ones digit of the 2-digit number (3), which gives us 18. We

write down the 8 and carry over the 1 to the next step.

Next, we multiply the tens digit of the 3-digit number (5)

by the ones digit of the 2-digit number (3), which gives us

15. We add the carried over 1 to get 16. We write down the

6 and carry over the 1 to the next step. Finally, we

multiply the hundreds digit of the 3-digit number (4) by

the ones digit of the 2-digit number (3), which gives us 12.

We add the carried over 1 to get 13. We write down the 3.

The final result is 10488.

This method can be applied to any 3-digit number

multiplied by a 2-digit number. It may seem complicated at

first, but with practice, it becomes easier. It is

important to keep track of the carried over numbers and

write down each step clearly to avoid mistakes.

中文回答：

用一个3位数乘以一个2位数是一个常见的数学问题。它涉及

到将3位数的每一位数与2位数的每一位数相乘，并将结果相加。

例如，假设我们有一个3位数456和一个2位数23。要将它们

相乘，我们首先将3位数的个位数（6）乘以2位数的个位数（3），

得到18。我们写下8，并将1进位到下一步。接下来，我们将3位

数的十位数（5）乘以2位数的个位数（3），得到15。我们将进位

的1加上，得到16。我们写下6，并将1进位到下一步。最后，我

们将3位数的百位数（4）乘以2位数的个位数（3），得到12。我

们将进位的1加上，得到13。我们写下3。最终的结果是10488。

这种方法可以应用于任何3位数乘以2位数的情况。起初可能

会觉得复杂，但是通过练习，就会变得更容易。重要的是要注意进

位的数字，并清晰地写下每一步，以避免错误。