Starting off the list of conquests.

1. 一　(Meaning: One)

一月　(ichigatsu) - January

一日 (tsuitachi) - First day of a month

一つ (hitotsu) - One (thing)

一人 (hitori) - One person

一番 (ichiban) - Best/Number one


2. 二 (Meaning: Two)

二月 (nigatsu) - February

二日 (futsuka) - Second day of a month

二つ (futatsu) - Two (things)

二人 (futari) - Two people


3. 三 (Meaning: Three)

三月 (sangatsu) - March

三日 (mikka) - Third day of a month

三つ (mittsu) - Three (things)

三人 (sannin) - Three people


4. 四 (Meaning: Four)

四月 (shigatsu) - April

四日 (yokka) - Fourth day of a month

四つ (yottsu) - Four (things)

四人 (yonin) - Four people


5. 五 (Meaning: Five)

五月 (gogatsu) - May

五日 (itsuka) - Fifth day of a month

五つ (itsutsu) - Five (things)

五人 (gonin) - Five people


6. 六 (Meaning: Six)

六月 (rokugatsu) - June

六日 (muika) - Sixth day of a month

六つ (muttsu) - Six (things)

六人 (rokunin) - Six people


7. 七 (Meaning: Seven)

七月 (shichigatsu) - July

七日 (nanoka) - Seventh day of a month

七つ (nanatsu) - Seven (things)

七人 (shichinin) - Seven people


8. 八 (Meaning: Eight)

八月 (hachigatsu) - August

八日 (youka) - Eighth day of a month

八つ (yattsu) - Eight (things)

八人 (hachinin) - Eight people


9. 九 (Meaning: Nine)

九月 (kugatsu) - September

九日 (kokonoka) - Ninth day of a month

九つ (kokonotsu) - Nine (things)

九人 (kyuunin) - Nine people


10. 十 (Meaning: Ten)

十月 (juugatsu) - October

十日 (tooka) - Tenth day of a month

十 (too) - Ten (things)

十人 (juunin) - Ten people


Starting off easy! :D