列式计算. (1)一个数的
(2)
|
解(1)60÷(
-1 5
),1 6
=60÷
,1 30
=1800,
答:这个数是1800.
(2)(
-1 4
)÷(1 8
+1 4
),1 8
=
÷1 8
,3 8
=
.1 3
答:商是
.1 3
列式计算. (1)一个数的
(2)
|
解(1)60÷(
-1 5
),1 6
=60÷
,1 30
=1800,
答:这个数是1800.
(2)(
-1 4
)÷(1 8
+1 4
),1 8
=
÷1 8
,3 8
=
.1 3
答:商是
.1 3
阅读理解 | |||
| |||
请根据以上信息,选择正确答案。 | |||
1. Tom is a 12-year-old boy. If he has a headache, he should take _______ a day. | |||
A. 1/2 tablet B. 1 tablet C. 2 tablets D. 3 tablets | |||
2. If a person is _______ years old, he or she can't take this medicine. | |||
A. two B. ten C. thirty D. eighteen | |||
3. If you want to borrow some children books, you can go to _______. | |||
A. 5th floor B. 3rd floor C. 4th floor D. 2nd floor | |||
4. The Public Library is closed at _______. | |||
A. 4:00 pm B. 9:00 am C. 5:00 pm D. 12:00 am | |||
5. Lin and his father want to go to the Hamilton Zoo, they should pay _______. | |||
A. $15 B. $30 C. $45 D. $10 |