Chinese Numbers 10 – 100: Multiplication in Chinese.

20 х 4 = ?

二十乘以四等于多少?

èrshí chéngyǐ sì děngyú duōshao

A. 四十

B. 八十

C. 一百

More information on the Chinese numbers you can find in The Chinese Numerals for Businessmen by Polina Shinkina http://www.lulu.com/content/e-book/the-chinese-numerals-for-businessmen/19124210 or in each Chinese textbook by Polina Shinkina on http://www.lulu.com/spotlight/polina985