一、比较得数大小，在$◯$中填上“$＞$”“$＜$”或“$=$”。
1. sixty - fifty$◯$forty - thirty
2. eighty - seventy$◯$twenty - ten
3. sixteen + sixty$◯$eighty - ten
4. seventy - seventeen$◯$sixty + nine
5. eighty - one$◯$fifty + twelve

1. =；2. =；3. ＞；4. ＜；5. ＞

二、看图片，写单词。
1.

1. teacher
2. schoolbag
3. book
4. school

()1.There are sixty ________ in our school.
A. teacher
B. teacher's
C. teachers

C