Summarize:

Native Japanese counting tends to be simpler than the Sino-Japanese system and is only used to count things from 1 to 10. This set of numbers is also considered a universal counter. However, you can't use native Japanese to count money, time, or people. There are no counters in native Japanese style, which makes it simpler to use in daily life, for example, if you want to order 1 coffee or 3 pieces of sushi. Use flashcards or a similar method to learn the first 5 numbers in the native Japanese style counting. If you already know how to read hiragana, you can sound out the words. One (1) is (hitotsu, pronounced "hee-toh-tsoo"). Two (2) is (futatsu, pronounced "foo-tah-tsoo"). Three (3) is (mittsu, pronounced "mee-tsoo." Pause a beat between the two syllables). Four (4) is (yottsu, pronounced "yoh-tsoo"). Five (5) is (itsutsu, pronounced "ee-tsoo-tsoo"). Once you've mastered the first 5 numbers, move on to the next 5 using the same practice methods you used for the first 5. Now you can count to 10 in the native Japanese, or Wago, style. Six (6) is (muttsu, pronounced "moo-tsoo"). Seven (7) is (nanatsu, pronounced "nah-nah-tsoo"). Eight (8) is (yattsu, pronounced "yah-tsoo"). Nine (9) is (kokonotsu, pronounced "koh-koh-noh-tsoo"). Ten (10) is (tou, pronounced toh).
Learn when you can use the native Japanese style counting. Start with the numbers from 1 to 5. Add the numbers 6 through 10.