

数学の宿題が多いです。
数学は得意じゃありません。
明日、数学のテストがありますか。
"すうがく(数学)" is in the lesson "Education" (Level 14), along with 12 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.