1: One 11 eleven 21 twenty- one 31 thirty- one 41 forty- one
2: Two 12 twelve 22 twenty- two 32 thirty- two 42 forty- two
3: Three 13 thirteen 23 twenty- three 33 thirty- three 43 forty- three
4 : Four 14 fourteen 24 twenty- four 34 thirty- four 44 forty- four
5: Five 15 fifteen 25 twenty- five 35 thirty- five 45 forty- five
6: Six 16 sixteen 26 twenty- six 36 thirty- six 46 forty- six
7: Seven 17 seventeen 27 twenty- seven 37 thirty- seven 47 forty- seven
8: Eight 18 eighteen 28 twenty- eight 38 thirty- eight 48 forty- eight
9: Nine 19 nineteen 29 twenty- nine 39 thirty- nine 49 forty- nine
10: Ten 20 twenty 30 thirty 40 forty 50 fifty
chúc bạn học tốt :))
