lǎo shī / ràng / wǒ men / shú jì / jiǔ jiǔ chéng fǎ biǎo / tí gāo / jì suàn / sù dù

老师让我们熟记九九乘法表，提高计算速度。

The teacher asked us to memorize the multiplication table well to improve our calculation speed.