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乘整十数 = darab gandaan 10 40 可以看成 4 × 10。先把三位数乘 4，得出结果后再乘 10，也就是在后面补一个 0。两步都比直接乘 40 容易。 例子：125 × 60 = 125 × 6 × 10 = 750 × 10 = 7 500。 注意：做完第一步不要停下来，还要再乘 10。

multiply by a multiple of ten = darab gandaan 10 40 can be seen as 4 × 10. Multiply the three-digit number by 4 first, then multiply that result by 10 by writing one zero after it. Both steps are easier than multiplying by 40 at once. Example: 125 × 60 = 125 × 6 × 10 = 750 × 10 = 7 500. Watch out: do not stop after the first step; you still need to multiply by 10.

竖式乘一位数 = darab bentuk lazim 把四位数写在上面、7 写在下面，从个位开始乘。每一位的积满十时，个位写下来，十位进到左边一位。遇到 0 那一位，0 乘 7 得 0，还要加上进上来的数，才写下这一位的得数。 例子：2 043 × 6 = 12 258。 注意：有 0 的那一位最容易忘了加进位。

column method with one digit = darab bentuk lazim Write the four-digit number on top and 7 below it, and multiply from the ones. When a product reaches ten or more, write the ones and carry the tens to the next place on the left. In the place with 0, 0 × 7 is 0, but the carried number must still be added before you write that digit. Example: 2 043 × 6 = 12 258. Watch out: the place with 0 is where the carried number is most often forgotten.

乘一千 = darab seribu 转盘停在一千时，不必列竖式：把另一个转盘的数照写，再在后面补三个 0 就是积。 例子：35 × 1 000 = 35 000；70 × 1 000 = 70 000。 注意：补两个 0 是乘一百，补四个 0 就太多了。

times one thousand = darab seribu When a wheel stops on one thousand, there is no need for the column method: copy the number on the other wheel and write three zeros after it. Example: 35 × 1 000 = 35 000 and 70 × 1 000 = 70 000. Watch out: two zeros would be times one hundred, and four zeros would be too many.