UNIT 6 I HAVE FIFTY MARKERS
Lesson 21同步练习
一、给下列单词选择合适的翻译。
( )1. number A. 和 B. 数字 C. 铅笔
( )2. hundred A. 百 B. 千 C. 万
( )3. thirty A. 二十 B. 三十 C. 十三
( )4. seventy A. 十七 B. 七十 C. 第七
( )5. guess A. 想 B. 喜欢 C. 猜测
二、根据图意做计算, 并写出结果。
1.
2.
3.
4.
5.
三、根据单词,选择正确的图片,将其序号填入括号里。
( )1. seventy A. B.
( )2. number A. B.
( )3. ninety A. B.
( )4. hundred A. B.
( )5. eighty A. B.
四、算一算,选择正确的选项,将其序号填在橫线上。
A. sixty B. eighty C. fifty D. ninety
五、相一想,写出所缺的单词。
1. Fifty plus ________ is sixty.
2. One hundred minus ________ is eighty.
3. Thirty plus forty is ________.
参考答案
一、1. B 2. A 3. B 4. B 5. C
二、1. twenty 2. sixty 3. eighty 4. thirty 5. ninety
三、1．A 2．A 3．B 4．A 5．B
四、1．C 2．B 3．D 4．A
五、1．ten 2．twenty 3．seventy
UNIT 6 I HAVE FIFTY MARKERS
Lesson 21同步练习
一、拍拍手,读读下面的歌谣。
A plus B is 100. A minus B is 20.
A is 60, B is 40.
A plus B is 90. A minus B is 50.
A is 70, B is 20.
A plus B is 70. A minus B is 10.
A is 40, B is 30.
二、读读写写。
三、选择填空。
( )1. Look ________ the numbers on the blackboard.
A. on B. in C. at
( )2. ________ can guess the missing numbers?
A. What B. When C. Who
( )3. Fifty ________ ten is forty.
A. minus B. plus C. and
( )4. Forty ________ twenty is sixty.
A. minu B. plus C. and
( )5. The missing numbers ________ eighty and seventy.
A. is B. are C. am
四、照样子, 计算。
例: Eighty minus twenty is sixty.
1. ________________________________
2. ________________________________
3. ________________________________
4. ________________________________
5. ________________________________
五、从方框中选出合适的词填空。
minus fifty markers plus erasers
1. I have many ________. I can draw pictures with them.
2. He has three ________.
3. My friend Jim has ________ books.
4. Ten ________ twenty is thirty.
5. Ninety ________ thirty is sixty.
参考答案
一、略
二、略
三、1. C 2. C 3. A 4. B 5. B
四、1. One hundred minus forty is sixty.
2. Seventy minus twenty is fifty.
3. Ninety plus ten is one hundred.
4. Thirty plus forty is seventy.
5. Forty plus forty is eighty.
五、1. markers 2. erasers 3. fifty 4. plus 5. minus
UNIT SIX I HAVE FIFTY MARKERS
Lesson 21
习题
抄写下列单词
blackboard
seventy eighty
ninety hundred
英汉互译
blackboard_______
hundred______
seventy_______
八十________
三、补全对话
A: What’s fifty plus two?
B: 52.
四、翻译下列句子
1. What’s six plus twenty?
___________________________________________________
2.50+20=?
___________________________________________________
3. Do you know the missing number?
___________________________________________________
4. The missing number is twenty.
___________________________________________________
参考答案：
一、略
二、1.黑板 2.一百 3.七十 4. eighty
三、Fifty two.
四、 1.六加二十等于多少？
2. What’s fifty plus twenty?
3.你知道空缺的数字吗？
4.空缺的数字是20.
