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乘一百补两个零 = seratus, dua sifar 一个两位数乘一百，就是有这么多个“百”，得数会是一个四位数。在原来的两个数字后面写上两个 0 就完成了。 例子：47 × 100 = 4 700。 注意：补三个 0 是乘一千，补一个 0 是乘十，要看清楚乘数是哪一个。

times 100 adds two zeros = seratus, dua sifar A two-digit number times one hundred means that many hundreds, so the product has four digits. Write two zeros after the two digits and you are done. Example: 47 × 100 = 4 700. Watch out: three zeros means times a thousand and one zero means times ten, so read the multiplier carefully.

乘一千补三个零 = seribu, tiga sifar 一位数乘一千，就是有几个“千”。在这个数字后面补上三个 0，得数是一个四位数。 例子：8 × 1 000 = 8 000；4 × 1 000 = 4 000。 注意：补 0 的个数要和一千里面 0 的个数相同，少补一个就变成乘一百了。

times 1 000 adds three zeros = seribu, tiga sifar A one-digit number times one thousand means that many thousands. Write three zeros after the digit; the product has four digits. Example: 8 × 1 000 = 8 000 and 4 × 1 000 = 4 000. Watch out: add as many zeros as one thousand has; one zero fewer would be times one hundred.

中间有零的数 = nombor dengan sifar di tengah 这个三位数的十位是 0。乘一百时，把整个数照原样写下来，包括中间的 0，然后在后面补两个 0。 例子：709 × 100 = 70 900。 注意：中间的 0 常常被漏掉；写完后把得数末尾两个 0 遮住，看看是不是回到原来的数。

a number with a zero inside = nombor dengan sifar di tengah This three-digit number has 0 in the tens place. To multiply by one hundred, copy the whole number exactly, including the middle zero, then write two zeros after it. Example: 709 × 100 = 70 900. Watch out: the middle zero is often lost; cover the last two zeros of your answer and check that the number you multiplied is left.

数零 = kira sifar 乘数是一千时，先看一千写成数字时，在 1 的后面跟着几个 0。乘数有几个 0，得数就在原来的数后面补几个 0。 例子：一万写成 1 后面跟四个 0，所以乘一万要补四个 0。 注意：先把乘数写出来，数清楚 0 的个数，再回答，不要凭感觉。

count the zeros = kira sifar When the multiplier is one thousand, look at how many zeros follow the 1 when it is written in numerals. However many zeros the multiplier has, that many are written after the number. Example: ten thousand is a 1 followed by four zeros, so times ten thousand adds four zeros. Watch out: write the multiplier down and count its zeros before answering; do not guess.