数学小测验

数学小测验

University

23 Qs

quiz-placeholder

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数学小测验

数学小测验

Assessment

Quiz

Mathematics

University

Hard

Created by

Hui J

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23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

计算 245 + 678 的结果是多少?

823

913

923

933

Answer explanation

计算 245 + 678,结果为 923。因此,正确答案是 923。其他选项均不正确。

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

如果一个长方形的长是12厘米,宽是8厘米,它的面积是多少平方厘米?

20

40

80

96

Answer explanation

长方形的面积计算公式是长乘以宽。这里长是12厘米,宽是8厘米,所以面积是12 * 8 = 96平方厘米。因此,正确答案是96。

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

1500毫升等于多少升?

0.15升

1.5升

15升

150升

Answer explanation

1500毫升等于1.5升,因为1升等于1000毫升。将1500毫升除以1000毫升/升,得到1.5升。因此,正确答案是1.5升。

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

一个圆形披萨被均匀地切成8块。小明吃了3块,小红吃了2块。还剩下多少块?

2

3

4

5

Answer explanation

披萨总共有8块,小明吃了3块,小红吃了2块,总共吃了5块。剩下的块数是8 - 5 = 3块。因此,正确答案是3。

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

如果2x + 3 = 11,那么x的值是多少?

3

4

5

6

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

一个正方形的周长是28厘米。它的边长是多少厘米?

4

6

7

14

Answer explanation

正方形的周长公式是4倍边长。设边长为x,则4x=28,解得x=7。因此,正方形的边长是7厘米。

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

75 ÷ 5 × 3 = ?

5

15

35

45

Answer explanation

To solve 75 ÷ 5 × 3, first divide: 75 ÷ 5 = 15. Then multiply: 15 × 3 = 45. Therefore, the correct answer is 45.

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